bklf7

As I thought I'm having a hard time figuring what wire does what. Can I assume there is a different color wire for each function and no repeating colors as far as it doing another function? So I can check the connectors at say the oil pressure gauge and see what color wire is there and go back into the cab and find that wire color so I know which wire it is?

wyoming9

iTrader: (1)

Maybe Do you feel lucky ??

Toyota can do interesting things with wire harnesses .

What starts out one color could come to a connector and change colors

The only real easy way I have found to do a swap is have both The Engine year and model and the vehicle year and model Toyota Electrical Wiring Diagrams.

I like having the hard copies . In fact I would not even attempt doing so with out them.

bklf7

Ok I've got them but thought it might be easier to just follow the wires that are on the truck

Terrys87

iTrader: (1)

95% of the wires are the same from year to year but I have seen in about each harness that there is some variance. If your truck is the same year they did carb and EFI, even the same year they changed something. I would want the exact year if it were me.

Another possibility that you could do that might help verify you are on the same wire, is to run a continuity check from one end of the wire to the other. Toyota uses several wires that look similar for example a yellow wire with a purple stripe that could be a burgundy color. Really check the colors and some may or may not have hash marks on the wiring the could make you think you are on the same wire.

For a quick example, look at your wiper motor. They are 4 blue wires but have different stripes and can get confusing.

bklf7

Ok thanks a lot. I will see what I can do to screw this up lol