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04-01-2009, 10:46 PM
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#26 |
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Senior Member
 
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: My alternator wont charge! please help!!!
Original harness has a ground wire, plus the big red and the other two that ran to the regulator. Black wire was grounded to the rad support and the other end to the alt. Might want to add one if it is not there.
__________________
1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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04-02-2009, 03:35 PM
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#27 |
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Registered User
Join Date: Sep 2007
Location: Fairdale, Kentucky
Posts: 560
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Re: My alternator wont charge! please help!!!
When I pulled out the original 307 my alternator was grounder to the manifold heat shield. After the new motor went in I didn't realize that I hadn't hooked it back up. killed my battery trying to get the new motor started. Once it did start and ran couldn't get battery to charge. Found the Rogue gound wire and stuck it right to the inner fender lip. it works perfectly. I believe that the alternator diagrams are on the site Electrical Forum and a "sticky" Under wire diagrams. Have a look. A ground is necessary.
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04-02-2009, 08:58 PM
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#28 |
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Registered User
Join Date: Mar 2009
Location: Stockton California
Posts: 42
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Re: My alternator wont charge! please help!!!
The battery is grounded to the chassy, and its a new big fnn wire, I give up, I still havent check the PUSH START BUTTON, maybe its that.???
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04-03-2009, 06:24 AM
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#29 |
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Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: My alternator wont charge! please help!!!
The battery ground doesn't go to the engine block first?
s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. 
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04-10-2009, 04:10 PM
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#30 |
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Registered User
Join Date: Mar 2009
Location: Stockton California
Posts: 42
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Re: My alternator wont charge! please help!!!
Hey GrapDawg, thanks alot man!!! I added an xtra ground wire to the alternator and it works, turned it on and diconnected the positive and it stayed on!!! thanks a mill man!!! thanks everyone else you guys saved me a trip to the shop. woo hooooooooooooo
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04-11-2009, 01:40 AM
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#31 | |
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Driven a 72
Join Date: Nov 2008
Location: Minnesota
Posts: 166
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Re: My alternator wont charge! please help!!!
Quote:
__________________
1996 GMC JIMMY 1972 CHEVY C10 LWB My 72 c/10 Build: http://67-72chevytrucks.com/vboard/s...d.php?t=318729 |
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