I have recently gotten the AC compressor to turn on (and the lines get cold!) but the blower motor will not work.
On the passenger side blower motor relay I get 12v to the orange wire. With the blower switch in any position I get -0.00 on the voltmeter for the purple wire. From what I have read the purple wire is what supplies power directly to the motor - it does actually connect from the relay to the blower motor.
Given that the purple wire does not receive power, is it safe to assume I should replace the blower relay before continuing?
I can get pictures of the wiring I am currently working with (someone unqualified was definitely in there).
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
The high speed fan relay ONLY works the Hi speed of the blower. You could take that relay off the car, and you should still have the lo, lo/med, and med/hi fan speeds....unless you have no power AT the fan switch itself....that's where I would start, if the fan does not run on ANY speed. It's possible that the relay AND the blower resistor are both messed up....but that's a long shot. I would still check for correct voltage AT the fan switch and go from there.
____________________________________ Joel Adams C3VR Lifetime Member #56 My Link
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