Wiring Harness - su Amazon AdAmpia gamma di strumenti e attrezzature musicali. 700R4 Wiring | eBay Find great deals on eBay for 700R4 Wiring in Automatic Transmission Parts. Shop with confidence. LS w/T56/TH350/700R4 - PSI | Standalone Wiring Harness Your Source LSX Conversion Parts. PSI specializes in the design and manufacture of GM Standalone Wiring Harnesses for LT1 and LS Engines and Transmissions.