Truck keeps blowing resistor. when i put a new one in it works fine for about 20 minutes than only on high speed. Wiring harness was melted a bit but i cut out all the bad spots and rewired it. Is there anything else i should look at or would it just be a bad harness where i can not see.

 

Looks like you have a short in the system. The only way to find it is to take off the harness and inspect it all yourself. Good luck!

 

yea, sounds like you got a shorted wire probly somewhere