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Move Dash Compressor Clutch wire from Switched Fuse

July 20, 2021, 09:13:57 pm

The fuse slot for the Dash AC Compressor Clutch has died.

The wire is currently connected to a Fuse that is switched to On when the Ignition Switch is turned on.

I have a non-switched 20A fuse slot available but no switched fuse slots available

What problems might I encounter by connecting the AC Compressor Clutch to an Always On fuse?

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Re: Move Dash Compressor Clutch wire from Switched Fuse

Reply #1 – July 20, 2021, 11:37:45 pm

I would think that the clutch would be powered all the time, another power robbing source. I would do a little investigation to find out what happened to the original slot.

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Re: Move Dash Compressor Clutch wire from Switched Fuse

Reply #2 – July 21, 2021, 12:26:14 pm

Thank you for your response.

I guess I am thinking the Compressor Clutch would not draw power until the dash AC system calls for Cooling. 

It seemed to me that the switch at ignition is redundant to the switches on the dash, and at the Dryer for the AC.  There would be no power draw at the Compressor Clutch until all three are turned on.

What am I missing with my analysis?

And yes, I will attempt fix the fuse slot, but having AC is more important right now.

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Re: Move Dash Compressor Clutch wire from Switched Fuse

Reply #3 – July 21, 2021, 11:23:28 pm

Ok..  I have been thinking wrong.

The Fuse slot may be bad, but I think I can jump over it with an inline fuse and retain the ignition switching process.  I will try that tomorrow and report back.

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Re: Move Dash Compressor Clutch wire from Switched Fuse

Reply #4 – July 23, 2021, 06:27:41 pm

Ok, I installed what I guess is called a pigtail fuse in place of the bad fuse socket.  Fastened one end to each wiring post for that socket. 

Everything now works as designed and the voltage on the load side is the same as the battery voltage.

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