Amazon: 2004 chevy impala wiring harness: Automotive 1-24 of 525 results for Automotive: "2004 chevy impala wiring harness" Skip to main search results Amazon Prime. Eligible for Free Shipping. 9005 9006 H10 Relay Harness Wire Kit with LED Light ON/OFF Switch For Aftermarket Fog Lights, Driving Lights, Xenon Headlight Lighting Kit, 2004 Chevrolet Impala Stereo Wiring Harness - AutoZone Equip cars, trucks & SUVs with 2004 Chevrolet Impala Stereo Wiring Harness from AutoZone. Get Yours Today! We have the best products at the right price.