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LT1 Wiring Basics |
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First, remove the LT1 harness from donor vehicle. I suggest labeling each connector as you remove it from the LT1 engine just so it's easier to tell what each connector is when you are modifying the harness. Don't cut anything! I suggest removing the harness through the firewall as well. It is hard but it makes it easier to keep the ALDL plug, Brake sensor switch (necessary for locking up torque converter), the AC system, Check Engine light, and other misc. things you may want to keep. You don't have to use the dash harness, I just chose to. Another good thing about keeping the dash harness is that it's attached to the fuse block. White plug (10 spaces) A-red wire = switched 12v power Blue plug (10 spaces) D-white wire = hooks to tachometer (The following are 2 plugs up from the computer, one 8 pin and one 10 pin) 8 pin connector B-pink wire = switched 12v power 10 pin connector A-pink wire = switched 12v power G-pink wire = switched 12v power 4 pin connector (off of the computer pigtail) orange = constant 12v power (hot at all times) red = 12v to the ignition (switched) black/white = ground purple = from starter to ignition ( this is the crank power to turn over the car) *The rest should just plug into the accessories, distributor, etc. *If you want to lockup the convertor using the ecm, you must hook up the brake signal switch! |
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