ACDelco 355S GM Original Equipment Ignition Coil Wire ACDelco GM Original Equipment Ignition Coil Lead Wires are induction coils in a vehicle’s ignition system that send power from the battery through the spark plugs to ignite the fuel in the engine cylinders, and are GM-recommended replacements for your vehicle’s original components.Brand: ACDelcoPrice: $63 gm coil harness | eBay Find great deals on eBay for gm coil harness. Shop with confidence. Skip to main content. eBay Logo: Set Connector Ignition Coil Wire harness Fits LT1 TPI TBI GM Camaro Firebird. Brand New. $9. Buy It Now. GM Ignition Coil Connector Wiring Harness Pigtail LS2 LS7 Lq4 5.3 6.0 8.1 Truck. Brand New. $11. Buy It Now. Free Shipping.