This standalone wiring harness from Painless Performance®™ fits 1998 to 2004 Camaros, Corvettes and Firebirds with a 5.7L LS1 / LS6 w/ Cable Throttle Body engine and 4L60E, T-56 transmission. Standalone harnesses are intended to run the designated engine & transmission only, generally when swapped into another vehicle. The kits comes with a full color manual for fast easy installation.