Jalopy
Full Access Member
- Joined
- Oct 31, 2021
- Posts
- 58
- Reaction score
- 27
- Location
- manteca california
- First Name
- joe
- Truck Year
- 1973
- Truck Model
- k10
- Engine Size
- 383 stroker
It won't turn off, anyone know why?
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Used to have a scan of an old GM advertisement touting this feature, since lost to a broken phone. They called it their constant cabin ventilation or something similar. It was across many if not all models, not just trucks.Any square 1980 and earlier will not have an "off" setting for the blower. It will always run at least a little bit.
My 86 gmc the off is on the ac Def heat selector side. Off is all the way to the left.It won't turn off, anyone know why?
It would be easier to just wire an on-off and mount it to the original face plate.Has anyone successfully rigged a switch/relay in one of these models, such that when the Off/Def/Heat selector is all the way left (Off) it turns off the blower motor?
I thought about doing that, too. In fact, I ordered a switch for the purpose before deciding I didn't want to cut holes in my dash. I have a relay, and I've ordered a limit switch with a lever. I plan to mount the switch to the plate in the ventilation control unit so that it opens the circuit to the fan when the lever is in the Off position. I'll post pics if/when I get it working.It would be easier to just wire an on-off and mount it to the original face plate.
I didnt realize the motor being on with key on was an intentional thing before 1982-1984, so I put a switch inline the (I think) purple wire to the wiper speed switch, because I didnt want it running all the time. I dont have a faceplate, so it just hangs there.
you could also just switch over to the wiring/electrical from a 1982 or newer square. I think, but i could be wrong, the necessary electronics are contained in the switch and maybe the harness from the switch to where it all runs toI thought about doing that, too. In fact, I ordered a switch for the purpose before deciding I didn't want to cut holes in my dash. I have a relay, and I've ordered a limit switch with a lever. I plan to mount the switch to the plate in the ventilation control unit so that it opens the circuit to the fan when the lever is in the Off position. I'll post pics if/when I get it working.