Description
LMMF 00+ 3100/3400 Simplified Harness
00-05 GM 3100 / 3400 Simplified Standalone Harness
LMMF Simplified Standalone Harness built to make getting your engine running quick, clean, and reliable. Designed with all new wiring and connectors, this harness eliminates unnecessary factory wiring and provides a simple solution for swaps, derby cars, race builds, and off-road applications.
Installation is straightforward with a simple power and ground hookup, allowing you to get your engine running with minimal wiring.
What This Harness Does
✔ Simplifies factory wiring into an easy standalone setup
✔ Allows quick engine startup with minimal wiring
✔ Eliminates unnecessary factory circuits
✔ Provides a clean and reliable wiring solution
Features
✔ Built with all new wire and connectors
✔ Simplified standalone design
✔ Minimal wiring required for operation
✔ Durable construction built for race and derby environments
Compatibility
Designed For:
• 2000 – 2005 GM 3100 / 3400 V6 engines
Uses a 1998–2005 tuned ECM
Perfect For
• Demolition derby builds
• Engine swaps
• Race cars
• Off-road builds
• Simplified wiring setups
Notes
⚠ For off-road use only
ECM and tuning sold separately unless otherwise specified.
Optional Add-Ons
• Injector harness adapters
• Tuned ECM
• Party Mode switch









