96-99 3100 injector Harness

96–99 GM 3100 Injector Harness

The 96–99 3100 injector harness is a direct factory-style replacement for 1996–1999 GM 3100 engines, built to provide a clean and reliable solution for stock replacements or simplified engine setups.

This harness is also fully compatible with 1989–1994 3.1 flat-top engines, making it an excellent option for builders looking to upgrade or convert older setups to run with a tuned ECM and simplified wiring harness.

It can also be used on 1995 3100 engines, allowing them to transition into a simplified wiring system with a tuned ECM for easier installation and improved reliability.

Key Benefits

✔ Direct replacement for 1996–1999 3100 injector harness
✔ Compatible with 1989–1994 3.1 flat-top engines
✔ Works with 1995 3100 engines when converting to a simplified ECM setup
✔ Perfect for simplified harness builds and tuned ECM applications
✔ Clean, reliable solution for swaps, derby builds, or simplified wiring systems

Whether you're replacing a worn factory harness or converting an older 3.1 / 3100 platform to run with a simplified wiring setup, this harness provides a straightforward, reliable solution.