lt1 stand alone wiring harness | eBay www›Search›lt1 stand alone wiring harnessSave lt1 stand alone wiring harness to get e-mail alerts and updates on your eBay Feed. + LT1 Wiring Harness and PCM Calibration Stand Alone Process by LT1 Wiring. Original LT1 WIRING, Making Engines run for 15 years. New (Other) $275. Buy It Now +$25 shipping. 8 Watching. 1994-1997 LT1 PSI STANDALONE WIRING HARNESS W/T56 OR NON 94-97 LT1 / LT4 Stand Alone Engine Harness - CPW | LSX 1994 – 1997 LT1 / LT4 Stand Alone Engine Harness. Our stock harnesses are 4 feet from the rear of engine passenger side. Available options Transmission, Electric Fans, Air conditioning and Upgraded Braided loom. Please call for custom ECM and/or Fuse Box Location, extra Length.