Blower motor not working from switch.
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Instructor
Joined: Feb 2011
Posts: 234
Likes: 15
Blower motor not working from switch.
Hello all. I have a 1975 a/c. I removed the condenser from the engine. Don’t t really need a/c but do need the defogger. When I switch to defogger and turn on the blower switch nothing happens. I hot wired the blower and it runs fine. I took the cover off the a/c relay and can trip the relay if a ground is connected and power is applied to the high speed connector but nothing if applied to the other connectors. Just want the blower to work from the switch (on high is fine). Can anyone help please? Thanks.
Pro
Joined: Nov 2023
Posts: 700
Likes: 335
From: Aubrey TX
Diagram helps a lot. Check that brown wire at the switch. It should have 12V with the ign on. With no fan at all, no matter what position the switch is in, its probably the switch or the brown 12V line to the switch.
