Can anyone tell me what these wires are for? 70 Chevelle SS. They are under the dash behind the instrument panel, two wires, brown and black with a purple strip into one terminal. Looks like it is factory wires. There is 12 volts to ground only when the ign key is turned on. http://www.chevelles.com/showroom/tempwires.jpg

Check this link
http://elcaminocentral.com/article-114-thread-1-1.html

The brown wire is the power feed for factory A/C. The black/pink wire is power feed to the TCS circuit. The top right fuse in the fuse block feeds them. This configuration is only found on a 70 Chevelle/Monte Carlo gauge dash harness.

Thanks Eltree. Someone must have taken out the rest of the TCS wiring and the car never had AC and yes it does have the gauges. Thanks