What we do is to first have a drawing of the entire circuit. The drawing identifies the wire size and color, of course. (we are not using a kit, we are building our own harness). We install wires by routing them all before they are terminated.....so all the bundles are there so we can check the size, clearances, etc. As we route the wires, we can use a highlighter to mark off the wire on the drawing so we dont forget wires or do too many.

When we finish routing, we start terminating at one end...usually the field end. Again, we mark the terminations off as they are done. Then, we terminate at the fuse block/relay/whatever.

Troubleshooting is done one fuse circuit at at time...insert the single fuse, check the circuit, remove the fuse and go to the next. If we have a major short, we are kinda isolated this way.

I keep a drawing of each car because I cant remember squat when we need to add stuff.

mike in tucson