86 blazer heater fan

[phatboi]

86 blazer has no power to the fan motor or the switch
the fan works I tested it
I have heard of a resistor box or relay some where, but don'y know where to look to test them

[Mikado14]

I will state the obvious first, have you checked your fuse?

[ricksza]

Power goes from the fuses, to the switch, to the resistor, to the motor.
Start at the beginning

[phatboi]

Originally Posted by ricksza

Power goes from the fuses, to the switch, to the resistor, to the motor.
Start at the beginning

ok so if I have power at the fuse and not at the switch then what ??
which wire on the switch will have power

[ricksza]

The closest wiring diagram I have is for 1989 which should be close. The blower switch gets its power on the brown/white tracer wire from the mode select switch which gets its power on the brown wire from the fuse box.