[Tommy]

93cmc,

How much do you understand about wiring and electricity? If the old wiring looks bad, doesn't work and is 20 years old, why not replace it all? Unless you've got a computer controlled, fuel injection wiring harness, there aren't many car wiring challenges simpler than a Cobra replica.

I replaced all the wiring in my car with a home built harness a few years ago. I started by listing all the electrical components and sketched out a wiring diagram. I then decided on wire colors and gauges, and routing for each wire bundle. I bought a bunch of wire and started cutting it to rough length and bundled it as required. In those cases where there were more than two wires of the same color, I attached labels to each end. I installed the bundles, trimmed each wire to the correct length, installed wire ends and connected each to its component. Along the way, I saw things I didn't like about the way the car had been wired, and I changed things that needed it.