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Old 12-11-2013   #1
yzpilot
 
Join Date: Jul 2013
Location: Oceanside, California
Posts: 66
Default I suck at electrical stuff!!

Ok guys, Hopefully someone can shed some light on this for me. My 91 has a non operating high tail light. It was inop since I bought the car, so I figured maybe I would be lucky and the bulbs were bad! No such luck. Changed all four and no dice. I am referencing the FSM and it talks about checking for opens on ckt 20 or ground ckt 150. This is greek to me! Anyone care to offer some advice? I really am clueless...not afraid to admit. Also my backup lights arent working either!! Thanks guys!
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Old 12-11-2013   #2
Schrade
 
Join Date: Dec 2012
Location: NC
Posts: 1,783
Default Re: I suck at electrical stuff!!

Open means no 12V coming TO the light bulb socket. Bad ground means 12V is coming TO the socket, but 12V can't ground out to the frame.

You have a multimeter?

You need one, or you need a LOT of money to buy parts blindly, and hope to find a winner (NEVER works THAT way).
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Old 12-11-2013   #3
yzpilot
 
Join Date: Jul 2013
Location: Oceanside, California
Posts: 66
Default Re: I suck at electrical stuff!!

Thanks Schrade. Yeah, got a multimeter. Will troubleshoot tomorrow.
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Old 12-11-2013   #4
daviddu79
 
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Join Date: May 2011
Location: france
Posts: 53
Default Re: I suck at electrical stuff!!

For the reversing lights often conctateur gearbox
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Old 12-11-2013   #5
daviddu79
 
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Join Date: May 2011
Location: france
Posts: 53
Default Re: I suck at electrical stuff!!

For the reversing lights often conctateur gearbox

http://www.ecklerscorvette.com/corve...1989-1996.html
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Old 12-11-2013   #6
yzpilot
 
Join Date: Jul 2013
Location: Oceanside, California
Posts: 66
Default Re: I suck at electrical stuff!!

Thanks David! I'll troubleshoot the b/u switch!
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Old 12-11-2013   #7
Racinfan83
 
Join Date: Apr 2013
Location: Eastern Missouri
Posts: 773
Default Re: I suck at electrical stuff!!

My high mount brakelight was inop when I took the car for State Inspection. The dealer changed the bulb, ran the wires, etc. When I looked it up online on my phone and told them there were TWO brakelight switches - they were like "Oh yeah....we were gonna check that next" (yeah right) Guess what the problem was... SO - check out the brakelight switches under the dash...
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Old 12-11-2013   #8
WVZR-1
 
Join Date: Oct 2004
Posts: 1,884
Default Re: I suck at electrical stuff!!

Quote:
Originally Posted by yzpilot View Post
Ok guys, Hopefully someone can shed some light on this for me. My 91 has a non operating high tail light. It was inop since I bought the car, so I figured maybe I would be lucky and the bulbs were bad! No such luck. Changed all four and no dice. I am referencing the FSM and it talks about checking for opens on ckt 20 or ground ckt 150. This is greek to me! Anyone care to offer some advice? I really am clueless...not afraid to admit. Also my backup lights arent working either!! Thanks guys!
CHMSL check first at the pedal and the second SL switch. The BU lights yes could be the connector at the switch, if you slap the shift lever a few times while entering reverse you can sometimes free the detent ball in the switch itself. Run it up to temperature and just exercise the shift lever through reverse a few times. It's a tough switch to remove but if you remove it and clean/soak the detent ball there's often nothing wrong with the switch, it just doesn't get the "exercise" it needs. Everything electrical needs a little exercise. the mirror, window switches, a/c control, DIC and the radio controls.

Your FSM will point you towards the correct switch.
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Old 12-11-2013   #9
yzpilot
 
Join Date: Jul 2013
Location: Oceanside, California
Posts: 66
Default Re: I suck at electrical stuff!!

Thanks so much guys!! Will check all these out and let you know what I find!
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