An LS coil is a type of ignition coil used in vehicles with a General Motors LS engine. These engines are typically found in cars and light trucks. LS coil packs, also known as “coil over plugs,” are designed to provide significantly improved performance and reliability compared to earlier generations of ignition coils. The LS coil design has been used for many years on production vehicles, but it’s becoming increasingly popular for engine swaps and other custom builds.
So how does an LS coil work? In a General Motors LS engine, the spark plug fires off from the energy stored in the ignition coil. This energy is created when the primary current in the ignition coil is interrupted by the ECU or electronic control unit. When this interruption occurs, the magnetic field in the coil collapses, causing the secondary voltage to dramatically increase. This high voltage is then sent to the spark plug, creating an ignition spark.
There are a few different types of LS coils available, each with their own unique advantages and disadvantages. Some of the most popular LS coils include the LS1, LS2, LS3, and LS7. These coils have different levels of performance and specific applications, so it’s important to select the right one for your vehicle. For instance, the LS3 coil is designed for higher-performance applications and should only be used in vehicles that are running a higher power level than stock.
In order to properly wire an LS coil, you’ll need to use a wiring diagram. This diagram will show you how to connect the different components in the ignition system, such as the ignition switch, ignition coil, and spark plug. Wiring diagrams will vary depending on the make and model of the vehicle, so be sure to consult your owner’s manual or service manual for the correct wiring diagram for your vehicle. Common symbols used in a wiring diagram for LS coil include arrows, boxes, lines, circles, and numbers.
Although wiring an LS coil is fairly straight forward, there are a few safety precautions that should be taken. Always make sure to disconnect the negative terminal from the battery before doing any wiring. It’s also important to double check all connections before turning on the vehicle. If a connection is loose or damaged, it could cause an electrical fire or short circuit.
Troubleshooting an LS coil can sometimes be difficult, so here are a few tips to help you out. First, be sure to check all the connections in the ignition system to make sure they are secured properly. Also, if you’re getting misfires or weak sparks, the problem may be related to the spark plugs or the coil itself. Finally, you may want to check the grounds throughout the vehicle to ensure they’re properly connected.
An LS coil provides great performance and reliability for engines with a General Motors LS engine. It’s important to understand how to properly wire an LS coil and to take safety precautions when doing so. Wiring diagrams are extremely useful when connecting the different components in the ignition system, and troubleshooting tips can help diagnose any potential issues. With the right knowledge and the right parts, you can get the most out of your LS coil.
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