1987 electrical issue starting with ctsy/clock fuse
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1st Gear
Joined: Dec 2017
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1987 electrical issue starting with ctsy/clock fuse
I just picked up my first corvette, a 1987. Just to get this started, my issue is that when I insert the itsy fuse, the car acts like they key is in run. First off, I have no power to the hot wire at the radio until I go to the run position, rand my blower motor, and windshield wipers aren' working. Essentially I have an electrical night mare. I need to get electrical diagrams, but can anyone give me some common tips?
Safety Car
Joined: Sep 2004
Posts: 3,953
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From: Mission Viejo CA
The first thing you need is a copy of the Factory Shop Manual (FSM). Be sure you get the two book set, which includes the Electrical supplement.
The CTSY/CLK circuit is quite complex, and there are several things that could be causing your problem. I'm sure that's why no one has responded to your dilemma, yet. Here's an '87 FSM on eBay now:
https://www.ebay.com/itm/1987-CHEVRO...laGgxz&vxp=mtr
Don't be tempted with the Chilton's or Haynes repair books. They are too basic, and don't give you the information you need! If you have a Canary, they are okay for the bottom of its cage!
The CTSY/CLK circuit is quite complex, and there are several things that could be causing your problem. I'm sure that's why no one has responded to your dilemma, yet. Here's an '87 FSM on eBay now:
https://www.ebay.com/itm/1987-CHEVRO...laGgxz&vxp=mtr
Don't be tempted with the Chilton's or Haynes repair books. They are too basic, and don't give you the information you need! If you have a Canary, they are okay for the bottom of its cage!
Drifting
Joined: Nov 2015
Posts: 1,716
Likes: 332
Finalist 2020 C4 of the Year - Unmodified
The radio isn't powered until ignition on. It will power when in AC too.
Wipers, may have gotten dirt in the switch. Disconnect battery, then move the switch on to off a dozen times at a little over medium speed, this may clean it up. Worth a try, quick and cheap.
For the blower, do you have the manual or automated environment controls? If manual, might try the same clean method, though I think it's probably not dirty switch connections. If the automated, it does try to keep at set temperature and won't blow when at the right temp. Try maxing out the temp for AC or increasing the fan speed manually.
Don't forget to check all fuses. Use a meter, don't just look at them.
Wipers, may have gotten dirt in the switch. Disconnect battery, then move the switch on to off a dozen times at a little over medium speed, this may clean it up. Worth a try, quick and cheap.
For the blower, do you have the manual or automated environment controls? If manual, might try the same clean method, though I think it's probably not dirty switch connections. If the automated, it does try to keep at set temperature and won't blow when at the right temp. Try maxing out the temp for AC or increasing the fan speed manually.
Don't forget to check all fuses. Use a meter, don't just look at them.
