Thinking about re wiring Who makes the best harness

[1970 CST Short Wide]

Originally Posted by LS short box

The LS ECM will need 12 volts constant and 12 volts in start and run when you turn the key. Your LS harness should include a fan relay and fuel pump relay.
I assume you will need a relay for the power windows.
Same with the AC circuit.
Gauges I'm thinking 12 volts in key on and run. Check with Dakota if it needs a constant 12 volt.
You have so much aftermarket stuff a direct fit harness would be a waste of money if its a lot more money than a universal kit IMO.
I love to hide wires. So on my 68 project I moved the Painless fuse block away from the fire wall and welded the hole shut. Then made a small hole and ran the chassis wires forward and back along the frame rail.
See pics.

You get What I’m saying. Maybe if I call AAW they can help. Nice Pics,love the hidden look. Here’s mine