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- - Blower motor wires (https://67-72chevytrucks.com/vboard/showthread.php?t=825875)

truckin 79

09-16-2021 08:50 AM

Blower motor wires

3 Attachment(s)

I am still working on ac system and my blower switch has three wires. My pigtail does not have the middle pigtail. The pictures I took from junkyard show 4 wires where do the four wires hook up to? This is a non AC truck so I thought it would be an easy hook up

Palf70Step

09-16-2021 02:29 PM

Re: Blower motor wires

Some trucks came with 3 wire and some 4 wire. I honestly don't remember what the connections for each are.

Palf70Step

09-16-2021 03:01 PM

Re: Blower motor wires

2 Attachment(s)

This may help you.

truckin 79

09-16-2021 04:34 PM

Re: Blower motor wires

Thanks Palf70step, I dont suppose you have any blower switch schematics without AC do you? I have a 79 truck with no AC and I am trying to install a old school A-R-A system now. Just thinking out loud but everyone of those wires running to switch are 12volts and regulated by the switch correct?

Palf70Step

09-16-2021 05:27 PM

Re: Blower motor wires

2 Attachment(s)

I could not find any in the electrical that said no AC. There is one that says HD heater and auxillary heater, but nothing that say regular/no ac

hatzie

09-17-2021 11:02 PM

Re: Blower motor wires

The standard HVAC wiring is buried in the whole truck page.

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