Ok I need to rewire my 47 (late) 3/4 ton pickup. I was wondering - first - how many companies make a hrness, and - second - Anyone have a drawing (with lengths) of a home made one? I've built several harnesses over the years, but I have always been able to remove the old one first, this time I won't have it available to do that. It should be a pretty much stock harness. The only accessories are radio, heater, and ws wipers. It is an alternator system, though.