1972 Chevelle SS Wiring Diagram and Pictures After weeks of reviewing wiring diagrams and searching the internet and forums for information, I finally identified all of the various wiring harnesses connections for my Chevelle project. My car is a 72 Chevelle SS with the following options: Brake Light Switch AE - Console Harness Connector Body Harness AF Brake Light Wiring Diagram | HowStuffWorks Brake Light Wiring Diagram - This brake light wiring diagram gives you a clear picture of where each wire goes. Visit HowStuffWorks to check out this brake light wiring Author: Ed Grabianowski 72 Chevy Brake Light Wiring - appterpointapp PDF file72 Chevy Brake Light Wiring. Need wiring diagram for turn signals on 1972 chevy truck I am having a problem wiring my tail lights on my 1958 chevy 3200 pickup. Running lights/tails work, right and left turn OK, wire from thre brake switch works and is hanging under the truck. How to Fix a Bad Ground Wire for Brake Lights | It Still Runs A bad brake light ground connection will result in the brake lights not working, or power crossfeeding through the tail-light circuit, preventing both tail and brake lights froms working at the same time. Repairing the connection is a project that is