2003 Corvette LS1 - 3 wire hook up
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How To: 4 Wire LS Wiring Harness Conversion, Part 1
In part one we show how to begin disassembling a 4.8L/5.3L/6.0L Truck harness in order to modify it to work on an LS1 intake and be fully compatible with an older wiring system so you can use it in a classic project. All the power wires will be modified and condensed in order to convert the harness to a "4 wire hookup". Wiring Harness Pinout: http://lt1swap.com/99-02_vortec_pcm.htm
Standalone EFI LS1 swap Truck Harness
Rats nest streamlined. Running TH400 trans and electric fans.