I got in my stereo tool box and there seems to be more than one configuration. I got every possible wiring harnes for a ford here and a few manuals. None seem to have one right answer. If you have your hands on a volt ohm meter then you have answers. With the key off atleast one will be hot to ground. Tape it off, mark it, and put it aside. With the key on one more will be hot, mark it "key on".
If there are still speekers in the truck then pick one of the remaining wires and see what resistance there is to ground, and to some of the remainding wires. What you are looking for is a 4,6 or 8 ohm speeker. If you find four pairs of wires having 4_8 oms between each of them then you found four speekers. Tape them and mark them.
On the new stereo, you know where the wires are supposed to go. right?
Wire the + and - power to the stereo, carefull not to get any wires crossed.
Use one of the speeker outs from stereo with volume up. Use the static noise comming from the stereo to figure out what speeker is which inside the truck.
Use this same process of elimination to figure out the rest.
Crimping on all thees wires while taking notes should only take about 3 hours of serious concentration.
The $5 kit is pricless!
