Yeah im totally confused too... I figured hopefully it was some short and since the wires to the ammeter fried quite a few other wires I decided to start with the whole wiring harness. Luckily someone an hour away had a 69 camper harness for 150 so I'm putting that in and doing the bypass. but I'm running into a few hang ups.

A couple wires are different and was wondering if anyone knew what they might go to... here's an image and there are also a couple wire plugs for the brakes that are not on my 70 tradesman and a 2 wire black with white stripes plug under the floor mat near the brake pedal that the 69 harness has no plug for.

Any help would be great as I'm broke and stuck at a friend's out of town in a crazy town called apache junction... it's a little crazy in this town