Diagram for Reference

The Part of 2002 Chevrolet Chevy Impala Wiring Diagram: power distribution, battery, ignition switch,
junction block, crank relay, starter solenoid, relay ctrl, powertrain ctrl module, crank voltage, fusible link, generator,black wire,  solenoid contacts, yellow wire, schematics

The Part of 1999 Chevrolet Chevy Wiring Diagram: power distribution cell, turn B/U fuse, stop hazard
lamp, IP fuse box, audible warning cell, backup light, pickup, solid state, cruise control, convenience center, turn/hazard flasher, turn hazard switch, stoplamp switch, switch brajes, underhood fuse box, taped to harness.