Chevrolet S10 Wiring Harness - jcwhitney Want an affordable yet high-quality Chevrolet S10 Wiring Harness? Shop now and enjoy our lowest price guarantee and access to the best brands in the industry! 1985 Chevy S-10 Pickup OE Wiring Harnesses & Stereo Chevy S-10 Pickup 1985, Factory Replacement Wiring Harness by Metra®, with OEM Radio Plug. For factory stereo. This high-quality Metra wiring harness is just what you need to replace your defective or aged factory wiring harness.