LMMF Simplified Wiring
- 18770 State Highway O, Rolla, Missouri, United States (US)
- 15735786347
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LMMF “Party mode” temp sensor meltdown switch
$135.00🔥 LMMF “Party Mode” Switch
When normal mode just isn’t enough.
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LMMF 00+ 3100/3400 Simplified Harness
$315.00 Fits 00-05 GM 3100 / 3400 Simplified Standalone HarnessADD TO CART -
LMMF 00+ 96-99 3100/3400 Injector Harness Adapter
$72.00 00+ to 96–99 3100/3400 Injector Harness Adapter is a simple plug-and-play solution that allows you to use a 2000–2005 style 3100/3400 harness on a 1996–1999 style engineADD TO CART -
LMMF 02-05 2.2 Ecotec harness
$345.00 02–05 GM 2.2 Ecotec Simplified Standalone Harness is designed to make getting your engine running simple, reliable, and hassle-free. Built with all new wiring and connectors.ADD TO CART -
LMMF 02-05 Ecotec tuned ecm
$145.00Tuned ECM 2002–2005 GM 2.2L Ecotec Engines
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LMMF 04-08 Series 3 3800 tuned ecm
$220.00Custom ECM Tune for 2004–2008 GM 3800 Engines
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LMMF 1997-2001 GM 2.2 SFI Simplified harness
$415.001997–2001 GM 2.2L Simplified Standalone Wiring Harness
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LMMF 1997-2001 GM 2.2 SFI Tuned ecm
$200.00 custom tuned 97-01 gm 2.2 ecmADD TO CART -
LMMF 1998-2005 3800 Supercharged Simplified harness
$350.001998–2005 Supercharged 3800 Simplified Standalone Harness
Take the headache out of wiring your supercharged 3800 swap with this plug-and-play simplified harness, built specifically for GM 3800 Supercharged L67 / L32 engines (1998–2005). Designed for reliability and ease of installation, this harness removes unnecessary factory circuits and streamlines the wiring so you can focus on performance instead of wiring diagrams.
Perfect for engine swaps, race cars, and demolition derby builds, this harness provides a clean and dependable solution using brand-new wiring, connectors, and heavy-duty loom.
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LMMF 1999-2002 LS TUNED ECM 4.8/5.3/6.0. DBC
$215.00Custom ECM Tune for 1999–2002 LS Engines
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Compatible with 4.8 / 5.3 / 6.0 LS platforms -
LMMF 2002 GM 2.2 stand alone harness
$415.002002 GM 2.2L Simplified Standalone Wiring Harness
Take the hassle out of your engine swap or race build with the 2002 GM 2.2L Simplified Standalone Wiring Harness. Designed for reliability and quick installation, this harness eliminates unnecessary factory wiring and gives you a clean, easy-to-install solution.
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LMMF 2007-2010 2.2 ECOTEC E37 TUNED ECM
$220.00 cobalt malibu hhr tuned ecmADD TO CART -
LMMF 3.1/3100/3400 Carb harness
$220.003.1 / 3100 / 3400 Carb Conversion Harness
Want to run your GM 3.1, 3100, or 3400 engine with a carburetor while still keeping full electronic timing control? This harness makes it simple.
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LMMF 3100 – 3400 – 2200 – LS ECM mount bracket
$65.00 W body ecm mountADD TO CART -
LMMF 3100/3400 Extended Crank sensor harness
$42.00 Upgrade your ignition system with the 3100 / 3400 Extended Crank Sensor Harness, designed to eliminate brittle factory wiring and provide additional length for coil pack relocation and cleaner engine bay setups.ADD TO CART -
LMMF 3100/3400/3800 Coil Bracket
$40.003100 / 3400 / 3800 Coil Pack Bracket
Keep your ignition system secure with the 3100 / 3400 / 3800 Coil Pack Bracket. This bracket is designed to provide a solid mounting solution for your coil pack while helping protect it from damage or tampering.
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LMMF 3100/3400/3800 Extended Length HD Plug Wires
$50.00W-Body Extended Heavy Duty Spark Plug Wire Set (Set of 6)
Select options
Available Colors: Red, Blue, or Yellow -
LMMF 4t45e Transmission Hotwire
$42.004T45E Transmission Hotwire
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LMMF 80 amp breaker
$23.0080 Amp Waterproof Circuit Breaker
Protect your electrical system with this 80 Amp Waterproof Circuit Breaker, designed for high-draw accessories and harsh environments. This breaker provides reliable protection while allowing quick manual reset if a circuit overload occurs.
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LMMF 89-99 3100 ECM and Harness Combo
$550.00 Harness and ecm combo for 3.1 flat tops, and 96-99 3100/3400 engines includes ecm and harnessADD TO CART -
LMMF 96-2005 3100/3400 ECM Harness Combo
$525.00 Complete plug-and-play wiring solution for your 3100/3400 includes ECM and HarnessADD TO CART -
LMMF 96-97 3100 Simplified harness
$320.0096-97 3100 Simplified Standalone Wiring Harness
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LMMF 96-97 3100 Tuned Ecm
$120.00Custom ECM Tune for 1996–1997 GM 3100 Engines
Unlock the full potential of your 1996–1997 GM 3100 engine with a custom ECM tune designed specifically for race, off-road, and demolition derby applications. This calibration removes factory limitations while optimizing performance and reliability for stripped-down builds.
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LMMF 96-99 3100 injector Harness
$105.00 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.ADD TO CART -
LMMF 96-99 to 00+ Injector adapter pigtail
$75.0098–00+ Injector Adapter Pigtail
Easily convert your 1996–1999 GM 3100 or 3400 wiring harness to work with a 2000–2005 style injector harness using this 98–00+ Injector Adapter Pigtail.
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LMMF 98-05 3800 Series II simplified harness combo
$490.00Harness and ECM combo Fits 1998-2005 GM 3800
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LMMF 98-05 3800 Simplified wiring harness
$350.001998–2005 GM 3800 Simplified Standalone Wiring Harness
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LMMF 98-05 3800 Supercharged Tuned ECM
$150.00Custom Supercharged ECM Tune for 1998–2005 GM 3800 Series II
Built specifically for supercharged 3800 setups, this custom ECM tune is designed to maximize performance, responsiveness, and reliability—whether you're chasing horsepower or building a derby-ready monster.
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LMMF 98-05 3800 Tuned ECM
$140.00 This Custom ECM Derby Tune for 1998–2005 GM 3800 engines is built specifically for demolition derby and off-road applications where factory limitations just get in the way.ADD TO CART -
LMMF 98-99 3100/3400 Simplfiied wiring harness
$315.00 Our LMMF Simplified Standalone Harness is 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.ADD TO CART -
LMMF 98+ 3100/3400 Tuned ECM
$140.00 This Custom ECM Derby Tune for 1998–2005 GM 3100 / 3400 engines is built specifically for demolition derby and off-road applications where factory limitations just get in the way.ADD TO CART -
LMMF Adjustable Wbody Throttle Bracket
$55.00 LMMF Adjustable Throttle Bracket – GM 3100 / 3400 / 3500 (6-Bolt & 12-Bolt Options) Fix throttle cable alignment the right way with the LMMF Adjustable Throttle Bracket, built specifically for GM 3100, 3400, and 3500 LX9 engines. Designed for engine swaps, demolition derby builds, and custom setups, this bracket eliminates the common throttle geometry problems that come from factory parts or homemade solutions.Select options -
LMMF Quick Disconnect switch box
$240.00 The LMMF Quick Disconnect Switch Box gives you a clean, simple way to control your car while making it incredibly easy to remove or swap components between builds.ADD TO CART -
LMMF Standard Switch box
$190.00 Standard switch box with push button, 4 toggles, voltage gauge and 5' leadsADD TO CART -
LMMF W Body Universal Trans hotwire kit
$75.00 The W-Body Universal Transmission Hotwire Kit is designed specifically for 4T60E and 4T65E transmissions, allowing you to lock the transmission in 1st gear for maximum power and control.ADD TO CART