On my 1971 I blower motor replaced the relay in the engine bay. I unplugged the anti-dieseling and blocking relays under the dash and put in a jump wire to bypass those two relays (I don’t have the anti-dieseling solenoid on my carb).
At first the fan speed switch worked only in the first two of the 5 positions. After a while playing with the switch it worked in all settings except high. Then briefly it worked on high and I was able to turn it on and off and use all speed settings. A couple minutes later I tried again and high no longer works. I cleaned the contacts for the connector but made no difference. I tested the switch with a meter and seems to work fine in positions 2 through 5 (5 being high). What should I be looking at next?
Also want to conform the functionality of the fan switch. There are 5 positions on the fan switch. On first position the fan will turn on low when I am in one of the AC settings. It does not turn on when I go to the heat settings in position 1, only positions 2 through 5. Does this sound right?
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