Blower motor relay??

[morgankshaw]

Trying to get the blower motor to work on my 87 f350. Fuse is good but no power to the motor with my tester. I pulled the switch from the dash and no power there either! Is there a hidden relay I’m not seeing??


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[chillman88]

Nope. You'll have to trace it back to the fusible link on the starter solenoid. There will be a relay on mine whenever I get around to reworking this foolish electrical system!

 

[chillman88]

There's a good diagram here in my thread. Thanks to Thewespaul

https://www.oilburners.net/threads/heater-blower-issues.81483/

 

[morgankshaw]

There is power at the fuse box. Doesn’t it run from the fuse the the fan speed switch in the dash? Or dies it run from the fender relay to the motor then over to the switch?


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[chillman88]

Well I read it wrong anyway. I thought you had said you did NOT have power at the fuse.

Looking at the diagram in the thread I linked, it looks like it goes from the fuse box to the switch to the motor.

Have you tried a different fuse just for kicks? I have heard of them appearing fine but not working. Just a shot in the dark.

 

[morgankshaw]

Well I found the problem wire was disconnected under the dash near the fuse box. All working now!


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