This stand alone fuel injection wiring harness from Painless Performance®™ fits GM C&K trucks from 1996 to 1999. It is designed to work with 5.0L or 5.7L central multiport fuel injected engines and 4L60E transmissions. Included with this harness is an 8 circuit modular fuse block and GM color coded wires with labels for easy installation. For more information about the wiring kit or to find out which mating parts are required for installation, check out the online manual.