Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Turn b/u fuse

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Old Mar 31, 2005 | 08:35 PM
  #1  
Kevs87Z28's Avatar
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From: Dayton, Ohio Area
Car: Yellow/Black 1987 Z28
Engine: 355 Carb
Transmission: 700R4
Turn b/u fuse

hey guys. all of a sudden my turn b/u fuse keeps blowing. i disconnected the nuetral safety switch and put a fuse in and it didnt blow. it seems to be when you have the safety switch connected and shift into reverse it blows. i put in a 25 fuse instead of the 20 and now its not blowing. any ideas?
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Old Mar 31, 2005 | 08:56 PM
  #2  
Trickster's Avatar
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Check the dark blue wire at pin "C" of the park/neutral switch. It runs from there to pin "B" of the turn signal flasher and from there to the turn b/u fuse. BTW, I wouldn't leave that 25 amp fuse in there as it might cause more problems to the circuit.
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Old Apr 1, 2005 | 07:56 PM
  #3  
Kevs87Z28's Avatar
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Joined: Feb 2003
Posts: 480
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From: Dayton, Ohio Area
Car: Yellow/Black 1987 Z28
Engine: 355 Carb
Transmission: 700R4
i checked the wire it all looks fine?! it also blew that 25 on the way home from work. i dont know where it is shorting out. how can i find out whats wrong?
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Old Apr 2, 2005 | 09:34 AM
  #4  
Doward's Avatar
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Not to hijack the thread or anything, but I'm having a problem with the same circuit. As soon as I put the key in run, the circuit blows - Trickster, would you happen to have the wiring diagram of the Turn B/U circuit, and it's 20 amp glory?

I think that will also help this guy out
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Old Apr 2, 2005 | 10:37 AM
  #5  
Trickster's Avatar
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Yes I do and I will post it shortly.
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Old Apr 2, 2005 | 08:23 PM
  #6  
Trickster's Avatar
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
Here you go gentlemen, hope this helps. BTW, please note these schematics & trouble charts are from a 1988 camaro service manual.
Attached Thumbnails Turn b/u fuse-bu1.gif  
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Old Apr 2, 2005 | 08:24 PM
  #7  
Trickster's Avatar
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
page 2
Attached Thumbnails Turn b/u fuse-bu2.gif  
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Old Apr 2, 2005 | 08:24 PM
  #8  
Trickster's Avatar
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Joined: Sep 2003
Posts: 6,127
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From: conway, s.c.
Car: 1989 Iroc-Z
Engine: 5.7L TPI
Transmission: 700R4
page 3
Attached Thumbnails Turn b/u fuse-bu3.gif  
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