MaxSpark IGN1A Smart Coil Wiring Harness Kit - GM LS

Already have IGN1A smart coils on your LS engine and just need a clean, easy way to connect them? The MaxSpark Plug-N-Play LS IGN1A Wiring Harness Kit is your solution. Designed for maximum simplicity and performance, this kit gives you an attractive, high-quality way to finish off your ignition upgrade without the hassle of building a harness from scratch.

These plug directly into your factory LS engine harness and into each IGN1A smart coil—no splicing, no guesswork.

Key Features

• Plug-N-Play Convenience: Connects directly to your factory LS engine harness and IGN1A coils

• Full Voltage & Current Delivery: Ensures reliable coil performance with dedicated power and ground routing

• Simple Setup: Only three user connections needed:

  • Main power to the battery

  • Chassis/engine grounds

  • Switched 12V ignition power to the relay

• Clean, Tucked Install: OE-style fit and finish for a professional look

• Engineered for High Output: Ensures your coils perform at their peak under all conditions

Designed For

• MaxSpark PNP LS – IGN1A Smart Coil Ignition Kit

• Compatible with all standard GM LS engines (excludes LSA and LS9)

What’s Included in the Box

• (2) MaxSpark PNP LS Engine Wiring Harnesses
  – Passenger and Driver side

• (1) DIY Power Wiring Kit
  – Main power, switched power, and grounds

Important Notes

• Not Compatible With LS9 or LSA Engines
  These models have integrated ignition/fuel harnesses with non-standard connectors and mounting methods. Use of this kit on LSA/LS9 requires custom integration.