Pesky A/C Clutch

[Bar94Bronco]

Attached is the diagram.

Power goes from fues to dash switch, to low pressure switch, to high pressure switch to compressor clutch.

Just have to follow it back to the origin.

With the switch in normal or max AC the pink wire should have power on it.

There should be a brown wire with white stripe going into the switch that should have power on it.

Tiha, you are amazing! I have to run to work ill be checking this first thing tomorrow. Seriously thank you so much for spending some time to help me here.

I will update tomorrow, hopefully with a fix

 

[L\Bronco]

I tested voltage and I get power when I ground to metal
When I ground to the plug ground, I don’t get any power

Sorry to Chime in late here (There are already a lot of ideas being offered.)
I saw this line, and based on everything I read in here it appears that this measurement was made at the clutch coil connector with a jumper in the cycling switch connector.
If that is correct, Bar94Bronco, your issue is a lack of ground at the a\c clutch coil connector. This is G-100 and its located on the drivers side of the rad support behind the coolant overflow tank.
Hope that helps, good luck
Cheers

 

[Bar94Bronco]

@Tiha
FOUND IT!
These 2 switches are bugging out. Replacing them tomorrow.
When I jumped the ac heater switch
Viola

 

[Tiha]

That is awesome, glad you found it.

 

[Motech]

@Tiha
FOUND IT!
These 2 switches are bugging out. Replacing them tomorrow.
When I jumped the ac heater switch
Viola

Good work!