Tail light wiring diagram? - S-10 Forum Jun 18, 2013Tail light wiring diagram? Electrical / Lighting. starting at the tail light harness coming from the truck, brown wire is for tail lights, black is ground, dark green is right turn and yellow is left turn, the turn signal wires are also the brake light wires. that sounds wierd but if you hit the brakes and turn one of the signals on the actual brake light will blink. hope this helps you.Author: Ryan KrizanOne brake light not working - s10 pickupFeb 10, 2018Anyone have a Tail Light wiring Diagram? 1998 2 pickupApr 07, 2015If you need Wiring DiagramsOct 09, 201296 Tail light wiring schematic/color code??Nov 06, 2005See more results tail light wiring chevy s 10 | eBay Find great deals on eBay for tail light wiring chevy s 10. Shop with confidence.