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Old 10-30-2021, 07:34 PM   #1
Radtap
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Default Blower, horn & wiper only work in accessory pos

Recently did my blower fan and quickly realized it only worked in the accessory position. Retrofitted a 4 speed switch to replace the 3 speed switch with new resistor & fan, while trying to figure it out looked at my diagrams and saw wiper & horn are powered in the same position, occasionally the wiper has worked while going down the road but haven’t figured out what makes it work and not work, I’m thinking something wrong in the ignition switch? Looking to see if anybody has ideas before the dash comes out again
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Old 10-31-2021, 07:55 PM   #2
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If you wiggle the key when they are inop does it come on.? =bad switch.
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Old 10-31-2021, 09:31 PM   #3
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Haven’t been able to find a way to get them to work with car running, occasionally something jiggles and the wipers work. I’ve looked over the wiring and all connections are solid and not corroded, just haven’t looked in the ignition switch yet
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Old 11-01-2021, 07:08 AM   #4
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Did your car even have a resistor to begin with? It is an '80 242, right?

The permanent magnet blower motor speed selector in the 81 has a connection from KP-2 (run) power to the switch/resistor for the lowest speed, but the main connection comes from the yellow wire on the ignition switch KP1&KP2 (acc and run) for fuses 1-3 shared with wipers, horn, radio, etc.

Not sure, but it sounds to me like it is wired right, but the ignition switch isn't fully plugged in or, more likely, in bad shape inside.

http://cleanflametrap.com/ign_sw.html

Edit: By the way, just in case your "dash comes out again" refers to pulling the ignition switch, it ain't necessary. Look over the pics. Bring a stubby 3/16" slotted screwdriver. By feel, push the connector off of the back of the switch while sitting comfortably in the driver's seat. Blindfold yourself. Remove the screws and you have the switch in your hand.
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Last edited by cleanflametrap; 11-01-2021 at 07:43 AM..
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Old 11-01-2021, 11:33 AM   #5
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Original fan did not have a resistor so I wired one in with a later switch, I’ll take a look at the ignition switch tonight
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