Fuse Keeps Blowing
Thread Starter
Cruising
Joined: May 2012
Posts: 12
Likes: 0
Fuse Keeps Blowing
Having a problem with my 80 Vette. Evey time I slide the lever to AC or defrost the 25 amp fuse blows. I was looking at the wiring and I see a green and black wire going to the compressor assembly and out of the same cluster there is a blue wire and a black wire with a connector but not connected to anything. I can't remember if it ever was connected or is just one of those wires that hang out in limbo. Could this be the issue? I don't see anywhere to connect it.
What else could cause the fuse to blow each time?
What else could cause the fuse to blow each time?
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
Having a problem with my 80 Vette. Evey time I slide the lever to AC or defrost the 25 amp fuse blows. I was looking at the wiring and I see a green and black wire going to the compressor assembly and out of the same cluster there is a blue wire and a black wire with a connector but not connected to anything. I can't remember if it ever was connected or is just one of those wires that hang out in limbo. Could this be the issue? I don't see anywhere to connect it.
What else could cause the fuse to blow each time?
What else could cause the fuse to blow each time?
Since the DEFROST position also engages the A/C compressor's clutch I would suspect the problem is in the compressor's clutch coil. Disconnect the compressor's clutch coil and try running it in the DEFROST position. If the fuse doesn't blow then the compressor's clutch coil is most likely shorted or the wire going to it is shorted.
Drifting
Joined: Sep 2014
Posts: 1,430
Likes: 59
From: Long beach NY
St. Jude Donor '15-'16, '18
If the fuse went on just the a/c I would say dead short in compresso, same for blower, but since it happens for either it leads me to believe it is something common to both, don't know about 80 wiring but diagram would be a good start.
Drifting
Joined: Sep 2014
Posts: 1,430
Likes: 59
From: Long beach NY
St. Jude Donor '15-'16, '18
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I have a really nice schematic I posted, but realized it needed some tweaking... when I'm done I'll put it back in here. 
sorry.
sorry.
Last edited by Willcox Corvette; Jun 2, 2015 at 10:52 AM.
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