Wiring diagram....??
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Navigator
Joined: Feb 2003
Posts: 9
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Wiring diagram....??
Over the last three weeks my voltage on my dash of my '85 has varied from 8 to 19V, and I have had to get a jump start due to a dead battery several times. I have replaced the rectifier bridge in my alternator twice in the last two weeks (keeps burning up one of the six little copper things in the back of the alternator). After replacing it the second time the alternator guy said that it was probably an intermitent shorting of the wire from the alternator to the positive terminal of the battery. This is supposed to be a "direct wire" but I have traced the wire from the alternator to behind the engine block and traced the wire (bigger than the first) from the positive terminal to behind the block. Obviously it is not the same wire, but I need to figure out where they connect or what is causing my problem. If anybody has had similar problems and found a solution please let me know, or if somebody knew where an online wiring diagram for this part of the electrical system would be greatly appreciated. I want to cure the problem before I put the new alternator back in and burn it up again. I can do almost all of my own work and hate to have to take it in to a shop, but this one has stumped me. TIA.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: Wiring diagram....?? (AggieVette'03)
I came across a site today that may have the wiring diagram you're looking for http://batee.com/corvette/
It has a link entitled wiring diagrams, but I didn't click on it so I don't know if it has what you are looking for. The site also some other good stuff.
Hope this helps.
Jake
[Modified by JAKE, 11:48 PM 11/4/2003]
It has a link entitled wiring diagrams, but I didn't click on it so I don't know if it has what you are looking for. The site also some other good stuff.
Hope this helps.
Jake
[Modified by JAKE, 11:48 PM 11/4/2003]
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Re: Wiring diagram....?? (AggieVette'03)
The alternator output wire goes to a fusible link and then to the jump start terminal in back of the battery. If the alternator output wire is shorted on either side of the fusible link, it is possible that the link is blown and you will have no alternator output. Follow the alternator wire and observe if its insulation is abraded anywhere all the way to the jump start terminal. If the same rectifier diode is being blown each time, I would suspect a short in the alternator stator winding and a new alternator or a rebuild is needed.
Also, 19v is way out of range for the alternator voltage regulator and could be the cause of the blown diodes as the charging current would be excessive. Maximum alternator volts is 16.
[Modified by jfb, 12:00 AM 11/2/2003]
Also, 19v is way out of range for the alternator voltage regulator and could be the cause of the blown diodes as the charging current would be excessive. Maximum alternator volts is 16.
[Modified by jfb, 12:00 AM 11/2/2003]
