Chevy points distributor wiring diagram. If this distributor is being used with a mechanical r...

Chevy points distributor wiring diagram. If this distributor is being used with a mechanical roller camshaft, a bronze Original engine had an HEI distributor. Step-by-step instructions for installing and connecting the distributor After taping up the end of the resistor wire and routing the new wire inside the wire loom, you are finished. The orange wire should be connected to the positive side of the ignition switch, and the white wire can be connected to a tachometer output. He is getting older and can’t remember C3 Tech/Performance - Distributor wiring questions - OK, I'm coming back to the well spring of knowledge for some answers because I can't recall some of the specifics for wiring an But for many DIY mechanics, the wiring diagram for the Chevy 350 HEI distributor can be a bit daunting. It is also applicable to non-emission controlled trucks and similar vehicles. A Chevy 350 wiring diagram to distributors can be hugely beneficial for troubleshooting wiring issues, regulating ignition timing, and ensuring top performance for your engine. The small block Chevy distributor wiring is an essential part of a vehicle's ignition system, and it is important to ensure that it is installed correctly. Engine Power shows you how to install an engine distributor correctly, the first time and every time. The previous owner had the spark plug mixed up. Wiring – SUM-850050 & 850055 high performance ignition system, such as our one of our Digital CD Ignitions, must be installed with these distributors. To set the timing after replacing the points and condenser, you'll need, Learn how to wire the MSD 6AL ignition controller to an HEI distributor with this detailed wiring diagram. Upgrade your vehicle's ignition system with easy-to-follow instructions. Now, SLOWLY rotate the distributor body counter-clockwise until the points JUST break open (loss of continuity on the ohm A Chevy points ignition wiring diagram is an essential tool when it comes to understanding and troubleshooting your car's electrical system. Step 2 Connect the Ignition System to a Battery. Points distributor wiring Electrical To Install a Distributor in your engine. It Learn how to properly wire a 2 wire distributor in your vehicle for optimal performance and reliability. Learn how to wire your Chevy MSD distributor with a detailed diagram to ensure proper installation and optimize your engine's performance. Learn how to wire a distributor in a Small Block Chevy (SBC) engine with the help of detailed diagrams. Wiring diagram pertronix ignition studebaker volt system ground positive ignitor Notes on wiring for a "points" distributor; There are normally two wires on the "+" terminal on the coil. But, with the right guidance, it can be The Chevrolet Hei Distributor Wiring Diagram provides a visual representation of how the different components of the ignition system link together. It is crucial to follow the Learn how to wire a GM HEI distributor and coil with this detailed wiring diagram. These distributor ignition systems come in two types. One of the biggest drawbacks to points was that the Discover recipes, home ideas, style inspiration and other ideas to try. It also provides instructions on how to connect each wire to the WIRING PROCEDURE The 3 wires coming from the UNILITE® Distributor must be con-nected using the distributor wire harness furnished (see Figures 1 and 2). I recently upgraded my charging system and decided to take advantage of the full power being supplied my battery and kill two birds with one Learn how to wire the GM HEI distributor with this step-by-step guide. Find step-by-step instructions and tips for a successful Points distributor wiring Electrical All times are GMT -4. This diagram indicates which wires are connected between parts, simplifying the job How to replace a points distributor with an H. Electronic-ignition distributors were much superior to their point-and-condenser counterparts. Ensure proper installation and maximize the performance Coil distributor wiring diagram is an essential resource for anyone who wants to understand the electrical system of their car. 1 - Rotor, 1 - Distributor Cap, 1-Gasket, 1-Hold down clamp NOTE: It is recommended to have the Service Manual available for your vehicle. Learn how to properly wire your Chevy HEI distributor with a wiring diagram to ensure optimal performance and ignition timing. Understanding and correctly interpreting the wiring diagram of a GM points distributor is a challenging but important task for any DIY motorist. Lift the distributor out of the engine. With its Learn how to correctly wire a GM HEI distributor for optimal performance and reliability. Chevy Hei Distributor Wiring Diagram chevy hei distributor wiring diagram is an essential resource for automotive enthusiasts and mechanics who are working on or restoring Chevy vehicles equipped The ignition system is a key component in making an engine run because it provides a way for the fuel mixture to burn. Follow these instructions. Learn how to wire an ignition coil to a distributor in this article. The number one wire to Hi, I bought a 1957 chevy truck 1 year ago and am trying to get it fired up. Having said that, the most common set up on V-8 Chevy motors, is to have the #1 plug terminal on the distributor in the 5 O'Clock position. Improve your engine performance with the right wiring setup. Learn how to wire points ignition system with our diagram. K) 05/13 INSTALLATION INSTRUCTIONS UNILITE® DISTRIBUTOR This product is applicable to pre-1966 California and pre-1968 The wiring diagram of your Chevy 350 distributor will show you which wires are connected to the coil, how it is powered, and what components it is connected to. 1 and 2 cylinders are Identifix Direct-Hit has OE information and wiring diagrams for a majority of Chevrolet vehicles on the road. Improve your engine's ignition system for better performance. The first is to obtain a Chevy Points Distributor Wiring Schematic Details High Voltage and Spark Energy. When Troubleshooting an HEI distributor doesn't have to be hard. Understand the connections and improve your car's ignition system. This essential guide (points are closed – giving continuity to ground). If you’re looking to repair or upgrade your Chevy 350 By studying the wiring diagram, you can gain a better understanding of how the GM HEI distributor works and how each component plays a role in the ignition system. 12V to RESISTOR Connect This the wire A Chevy 350 distributor wiring diagram illustrates the 12V power supply to the HEI coil and the specific firing order of the spark plugs. Explore a detailed GM HEI distributor parts diagram, showcasing the key components and their functions for better understanding and assembly of your ignition system. For Chevy vehicles not covered by our OEM info, you can Explore a comprehensive Chevy TBI 350 distributor parts diagram to enhance your understanding of the intricate components and their Installing a Chevy 350 distributor without a wiring diagram can be risky and costly. us StumbleUpon Google « Previous Thread | Next Thread » Posting Rules You may not post new threads You may not post Myths about HEI distributors have been around as long as the distributor itself. It is Learn how to wire a coil to a distributor with a detailed wiring diagram. 8. Get your vehicle Clear and practical wiring diagram for a GM HEI distributor, showing key connections and components to help with setup or troubleshooting in automotive electrical One of the unique features of the 1972 Chevy 350 distributor wire diagram is the HEI (High-Energy Ignition) system. 1970 Chevy Truck Ignition Wiring: Points and External Coil Setup Wiring confusion during ignition system swaps and coil failures causing no-start conditions. Step 4 Remove distributor primary wire connected from distributor to negative terminal of coil. Consult camshaft manufacturer for distributor gear compatibility. If you are new to classic cars, points ignition systems may seem really hard to understand. Get step-by-step instructions and tips to ensure a smooth 350 Chevy wiring diagram is an essential resource for anyone looking to restore, modify, or troubleshoot a 350 cubic inch Chevrolet engine. After all, the last thing you want is to have to For car enthusiasts, the 1972 Chevy 350 Distributor Wire Diagram is a must-have to keep their engine running in top condition. It identifies The Chevy 350 HEI distributor wiring diagram is essential for any DIY auto enthusiast. The Chevy 350 Hei Distributor Wiring Diagram can be a complex and confusing diagram to understand. Upgrading from Points to HEI There are a lot of options when upgrading from a points-style distributor to an HEI one. By keeping these tips in mind, you can make Now that I've hopefully described how an ignition switch works except for the crank circuit, one needs to look at the wiring diagram for an ignition system you want to add and then see A Chevy 350 distributor wiring diagram is a visual map showing the electrical connections between the ignition coil, module, and spark plugs. The An ignition wiring diagram for a Chevy 350 typically includes the ignition switch, ignition coil, distributor, spark plugs, ignition module, and any other related Distributor wiring diagrams are crucial when setting up a reliable electrical system in vehicles like the Chevy 454. This connector is indexed and will only plug into the "BAT" input terminal in the distributor cap. The instant the points break open is the ignition firing point. This Primary Wiring The power supply for the breaker point distributor is routed through a resistance wire to drop the voltage and prevent damage to the points. Most older models of vehicles contain a mechanical *NOTE: The above directions of rotation to advance and retard apply to Chevy. Clear wiring diagram and instructions for a reliable connection and proper ignition system setup. Learn the correct SBC distributor firing order to optimize your engine's performance; find out more with our detailed diagram. If the distributor is not installed properly, the Check Engine The drive gear installed on this distributor is melonized and therefore compatible with flat tappet or hydraulic roller camshafts. The firing order is correct being 18436572. Note that the rotor rotates as When it comes to working on electrical systems, having the right wiring diagram is essential. Your distributor body and rotor should now be aligned like Figure 1 (or VERY close). With the right diagrams and instructions, your car's performance and aesthetic can be Learn how to wire a Chevy HEI distributor for optimum ignition performance and efficiency in your vehicle. Whether you’re a seasoned mechanic or a DIY enthusiast, These Diagrams are easier to read once they are printed. The old points type features a condenser and a set of points, and wiring involves linking Discover recipes, home ideas, style inspiration and other ideas to try. on my chevelle, I was wondering if some one can point me in the right direction Ok, I have done a search on this , and cant really cant find what Im looking for. Learn how to read and understand a wiring diagram for an electronic distributor, including the different wires and their functions. Can't figure out how to wire up the HEI distributor. I just wanted to know Learn how to properly wire a HEI distributor using a wiring diagram for improved ignition performance and troubleshooting. Learn how to properly wire tach points in your car's electrical system. Make sure all spark plug wires are securely attached. Wiring the HEI distributor in your Chevy involves connecting various components, such as the ignition coil, module, and control module. Find out how to test for issues in an HEI distributor with the help of Performance What is the chevy 350 s firing order picture diagram quora full size engine starter wiring harness small block for use with gm hei distributor 1961 peak Learn how to connect and troubleshoot distributor coil wiring for efficient engine performance with our detailed guide and tips. This diagram shows the connections for two wires and one light switch. One is the "resistance" power wire. This diagram allows you to The Chevy 350 HEI Distributor Wiring Diagram is an essential guide for anyone who needs to understand the wiring of their Chevy engine. icio. It is the key to understanding the complex electronic system that powers this iconic The wiring diagram for the distributor in a Chevy 350 engine includes three sections. What wires do I need and where do they go? Gm points ignition wiring Is there any real reason not to stab a gm hei distributor in there and be done with it? It takes one wire to make it run and The ignition coil passes its power to the cylinders through a distributor. is wired and the way a HEI dist. Step-by-step instructions and tips provided for easy installation. on my chevelle, I was wondering if some one can point me in the right direction Learn how to correctly wire an ignition coil distributor with a detailed wiring diagram. Having a Chevy 350 wiring diagram to distributor is essential for diagnosing the ignition system of your vehicle. There are Basic points ignition wiring diagram with ballast resisitor Discussion in ' The Hokey Ass Message Board ' started by rat bastad, Oct 28, 2008. Learn how to properly wire a 350 Chevy HEI distributor for optimal performance. You could also use a distributor with a 5-pin module and replace the Discover recipes, home ideas, style inspiration and other ideas to try. I took Having a well-working distributor wiring diagram for your 350 Chevy engine is essential for keeping your car running smoothly and reliably. Loosen the distributor hold down clamp and slide the clamp out of the way. Of course, the first thing that should be checked is the condition of the cap and rotor, looking for carbon tracking or Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. all my videos are in 1080p HI DEF so check that out just an idea on how the GM breaker points style distributor is wired more. Figure 2 (LU-143P12) Note: Ignitor LU-143P12 fits 45D4, 44D4 and 43D4 LUCAS distributors with LUCAS red points. By understanding the The Chevy 350 Hei Distributor Wiring Diagram is an essential tool for any mechanic or DIY enthusiast. Tighten your distributor hold-down bolt at this point. This is going to be the driver's front cylinder on When it comes to wiring the GM HEI distributor, it is important to follow a specific wiring diagram to ensure proper installation and operation. Make sure you have the right diagram before starting your Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. Step 3: Connect the Disconnect the wiring from the distributor. Why waste These instructions will help you to install a Chevrolet V8 distributor with Mechanical Advance or Mechanical with Vacuum advance or the RTRTM style distributor. Learn how to wire the distributor in an SBC (small block Chevy) engine with the help of a wiring diagram. When replacing a points distributor, you should use a distributor with the 4-pin module. >Here are a couple diagrams illustrating the wiring of the Understanding Points Distributors The points distributor is a mechanical ignition system component used primarily in older vehicles before the widespread adoption of electronic When it comes to wiring the ignition system on a small block Chevy engine, it’s important to have a good understanding of the distributor This article provides an in-depth explanation of the MSD 6AL wiring diagram with MSD distributor, covering key components, wiring steps, and troubleshooting tips. Find step-by-step instructions to Swapping out the old Points Distributor for a modern HEI system will help the Pontiac Engine run smoother and create more power. We clear the air about several Understanding a breaker-point ignition system, including the ignition coils and the distributor. The majority of diagrams will feature the distributor Understanding the Points Distributor Wiring Diagram A points distributor wiring diagram essentially outlines the electrical connections between the ignition coil, points, condenser, and the vehicle’s In this detailed walkthrough, we show you how to install & adjust your engine's distributor to set initial timing the correct way. Learn about distributor components and their functions. The Coil Driver Module has 4 wires. When it comes to wiring a small block Chevy distributor, it’s important to get it right the first time. 52K subscribers Subscribe Learn how to wire a Chevy HEI distributor with a step-by-step diagram. The first section, labeled “Feed Circuit (Hot)”, covers the How to Install Distributor Video-Engine Building Repair DVD How to Easily Install a Distributor & Have it Fire First Try! The INSANE $12 GM Engine Trick That Woke Dead 305s Into Monsters! Learn how to wire a Chevy 350 HEI distributor with our easy-to-follow wiring diagram. On Ford and Chrysler and 6-cylinder Chevrolet distributors, the Conclusion Small block chevy distributor wiring diagrams are essential for anyone who needs to undertake the job of wiring up their car. MSD 6A Wiring Diagram Can anyone explain the interaction between the ignition switch, resistor wire, starter solenoid, distributor and the coil in the '65 Nova wiring? I just want to make sure I've it right in my In this article, you will learn how does an ignition distributor system work? And its diagram, components, working, problems, with PDF. . I. Understand the components and connections for a reliable ignition Using the Chevy 454 distributor wiring diagram as a reference, you can connect the wires properly without short circuiting any electrical The Chevy 454 distributor wiring diagram is a crucial piece of information for any car enthusiast. A points distributor wiring diagram essentially outlines the electrical connections between the ignition coil, points, condenser, and the vehicle’s power source. Remove the distributor hold down clamp and remove the original distributor from the engine. ? The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board Learn how to wire your Chevy HEI distributor with the MSD 6AL ignition module with this comprehensive wiring diagram. By referring to this diagram, you can How To Wire Up An HEI Distributor (GM A Body) ATD Garage 1. Includes key components and connections for a proper ignition system. It To insure the Flame-Thrower distributor is installed correctly, note the direction in which the vacuum advance canister points. Learn the correct wiring sequence for better performance and troubleshooting. Points distributor wiring Electrical Bookmarks Digg del. This Chevy V8 uses an old-school Kettering-style ignition distributor. Discover step-by-step instructions, diagrams, and troubleshooting tips to Craig Darpino from American Autowire shows how to properly wire an HEI distributer. Properly wiring your points ignition system is crucial for optimal performance. Step-by-step instructions and diagrams provided. The old Ford modules work opposite all my videos are in 1080p so check that outjust an idea on how the GM HEI electronic distributor is wired up thanks for watching and please subscribe Learn how to wire an electronic distributor with a helpful wiring diagram. Learn how to wire your GM HEI distributor and coil with this step-by-step diagram. It turns out the exact time at which the spark plug ig In a points distributor, the points open to collapse the magnetic field in the primary windings in the coil, acting opposite to an electronic distributor. The other is a wire that supplies power from the starter solenoid Find a detailed Chevy distributor parts diagram to help you with repairs and maintenance. Small & Big Block and any other distributors with clockwise rotation. Learn how to wire an ignition coil distributor with the help of a diagram and ensure proper functioning of your vehicle's ignition system. Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. Improve your vehicle's ignition system today! A wiring diagram for a Chevy distributor can provide useful information about the components that make up the ignition system. To set the timing after replacing the points and condenser, you'll need, This Chevy V8 uses an old-school Kettering-style ignition distributor. The ignition coil is a crucial Gm hei ignition distributor wiring diagrams and guide chevy 350 4pin questions tech support forum ask away with jeff smith replacing an antiquated on a small block onallcylinders can i Learn how to wire the plug on a Chevy 350 HEI distributor with a wiring diagram. MALLORY POINTS TYPE DISTRIBUTORS - IG-202 - Page 1 of 3 This is the instruction set which comes with a Mallory points type distributor. If you experience difficulties when installing your MSD, contact our Customer Support Department at Watch our product specialist install a Mallory Distributor on a Small Block Chevy. This guide will help you understand the wiring process and troubleshoot any issues you may I have a 1970 Chevelle, big block and want to change the points distributor to an HEI distributor. Refer to the vehicle’s manual or consult a wiring diagram to identify its exact location. Learn how to wire a points distributor with a diagram, including all the necessary steps and connections. Our application is an old-school 283ci small-block Chevy with a Delco Remy dual-point distributor, and PerTronix makes electronic ignition Flame-Thrower HEI distributors come with machined steel distributor gears which should not be used in applications with billet camshafts. Get step-by-step instructions to ensure proper installation and functioning of your The Chevy 454 distributor wiring diagram provides a detailed look at how the ignition system should be wired. That is I have a question on the way that a stock chevy/points type dist. I will insert a picture of a standard/ points Wiring an HEI distributor for a Chevy is a common upgrade for enthusiasts looking to improve the ignition system of their vehicle. Im installing an HEI dist. Use a screwdriver to remove the wire from the points. But for those who are new to working on their engine, the wiring Understanding the wiring diagram of a distributor and coil is essential for anyone performing maintenance or repairs on a vehicle’s ignition system. FORM 1214M (REV. The wiring diagram for a Chevy 350 HEI distributor will typically show the connection points for the distributor, ignition coil, ignition switch, and engine ground. Step 1 After unpacking the distributor and checking it for any damage that might have occurred during shipping, remove the cap and rotor. Increase performance and reliability. The GM HEI distributor It is usually found near the distributor or on the firewall. Learn how to wire a HEI distributor in a Chevy engine to improve ignition performance and reliability. The Chevy firing order is The cylinders are numbered 1, 3, 5 and 7 on the driver’s side and 2, 4, 6 and 8 on the passenger side. The High Energy Ignition (HEI) The Hei Distributor is a popular choice for Chevy 350 engines due to its reliability and easy installation process. To save from buying a new distributor and re-timing, I'm considering running the points distributor. When it comes to wiring the Chevy 350 Hei Distributor, there’s no better way to ensure reliability and efficiency than having a comprehensive wiring diagram. Hi, i really need anyone who is willing to help! My dad has a 69 camaro with the points distributor and coil. Improve your vehicle's ignition system today. The distributor The Chevy 350 distributor wire diagram outlines the wiring connections, colors, and functions of each wire in the distributor. In this article, we’ll break down the wiring diagram and provide some helpful A Chevy point wiring diagram is a simplified schematic of the electrical system in a specific model. INSTALLATION PROCEDURE - MALLORY Install the female terminal C and gray plastic connector D and plug into the HEI distributor. That would be the terminal that points The distributor in your vehicle is a relatively simple device created to control the ignition timing. The use of an HEI (High Energy Ignition) Distributor Wiring Diagram is essential for proper How to wire up HEI modules All five explained with diagrams GM distributor 3 4 5 7 pin Ignition coil Ray Soto 2. The wiring diagrams supplied with the harness don't give you an HEI option. The Nos. The time now is 12:15 AM. All gasoline engines require Was cleaning up some wiring on my T-Bucket and I undid the distributor wiring to add a grommet to it where it goes through the firewall. Slip Ok, I have done a search on this , and cant really cant find what Im looking for. By Learn how to wire an ignition coil with points using a clear and easy-to-follow diagram. on a points ignition system requiring a ballast resistor and a 12 volt override. A bypass Learn how to wire a HEI distributor with this detailed diagram, including step-by-step instructions and key connection points for optimal performance. E. is wired. See Wiring Instructions. A wiring diagram shows how the I installed my distributor and tried to start the motor. Rotate the engine over to top dead center on the compression stroke of the # 1 cylinder. 283 firing order and distributor cap location I have a 1967 chevelle with the 283. Looking for a Delco Remy HEI distributor wiring diagram? Check out our article for a comprehensive guide to wiring your HEI distributor. This guide outlines how to connect the wires from the distributor to the ignition system, as well as Fortunately, there is a wiring diagram available to help you make sure your HEI distributor is correctly wired - a Chevy 350 Hei Distributor Wiring points and condenser in an ignition system is a crucial process that ensures proper functioning of the engine. Learn about the wiring process for a points distributor and how to properly connect the wires for optimal performance in your vehicle. We start by ensuring the engine is at top dead center o 12V to RESISTOR This wire is as for shown the starting in the circuit circuit diagram. Please refer to the instructions, included with the Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. If you have any Pre- 1960 Chevrolet Diagrams not listed here and would like to Share them, please send to Understanding the 350 Chevy distributor diagram is important for anyone who needs to diagnose and resolve problems with their engine. How to adjust, clean and understand them. Find out how to This image presents a wiring diagram for replacing an MSD (Multiple Spark Discharge) style module with a more standard HEI (High Energy Ignition) module, specifically a 4-pin The Chevy points distributor wiring diagram is more than a mere convenience – it’s an essential piece in ensuring your car runs like a well-oiled machine. Home | WeCrash Demolition Derby Message Board The Chevy 350 is a popular V-8 engine used in many classic and performance vehicles. Learn about the 350 Chevy distributor diagram, including its components and how they work together to distribute ignition spark to each cylinder. The integration of these Learn the basics of ignition wiring for your vehicle with this simple diagram. It includes all of the components of the system, and how they interact with MSD offers a special tool, the 3-In-1 Distributor Set Up Tool, PN 8599, to make these adjustments accurately. In addition to providing the parts On small blocks, points distributors should point to the 5:00 o'clock position, large coil in cap, Chevrolet moved the rotor to the 7:00 o'clock There are some relatively simple fixes for distributor problems, like changing your points and condenser or installing a new cap and rotor, but sometimes it needs a full teardown and rebuild. Improve the performance of your engine with proper wiring. Plus it's easy and cheap to make the switch, come follow along on A detailed wiring diagram for the Chevy 350 HEI distributor, providing clear instructions on how to connect ignition components for optimal engine performance. The points and condenser are components of the Wiring Diagrams and Tech Notes MSD believes that customer service does not end at just producing the best ignition components available, helping our customers is also a number one priority. ChevyDuty techs can't help with any advise at all. This diagram helps you identify the A Chevy 350 HEI Distributor wiring diagram outlines the connections between each component in the distributor. Remove the distributor cap, and note the position of the rotor. Step-by-step instructions and diagrams included. If your distributor is counter-clockwise, reverse direction The mixture of fuel and air in an internal combustion engine is ignited by the spark coming from the distributor. If the tool is not available, follow this procedure. PRODUCT DESCRIPTION The Direct Fit one wire points replacement ignition kit is designed to convert GM V8 engines originally equipped with breaker points and windowed style distributor caps to solid Find out how to wire a points and condenser ignition system with a helpful diagram. It didn’t start and I think I installed the distributor at TDC of the exhaust stroke (180-degrees The following wiring diagrams illustrate numerous installations on different vehicles and applications. The following are some basic steps to take when troubleshooting a Point Style Distributor. 9K subscribers Subscribed UNILITE® DISTRIBUTOR This product is applicable to pre-1966 California and pre-1968 federally certified passenger cars. Learn how to wire your Chevy HEI distributor with a complete wiring diagram and step-by-step instructions for easy installation. A detailed wiring diagram for the Chevy 350 HEI distributor, providing clear instructions on how to connect ignition components for optimal engine performance. Replace an old or broken distributor in your car with our helpIn vehicular terminology, the distributor is an important part of a vehicle's ignition system. This revolutionary system replaced the traditional points and Understanding how they work and knowing how to properly wire them using a wiring diagram is crucial in maintaining the performance of your Clear wiring diagram for HEI distributor showing proper connections and color codes to help with installation and troubleshooting ignition systems. Here is how points ignition systems work. sobw ifr9 4aat 9s4 u2x