Alternator won't Alternate - The 1947 - Present Chevrolet & GMC Truck Message Board Network

87Lowrider · 05-23-2008, 04:47 AM

Alright,

On my '87 SWB, I installed the '76 454 in and got it running last week. Having problems now with the charging system. I used the original wire to the alternator and the original alternator from the '87. It worked fine in November when I dismantled the system and pulled the 350. Now, it won't charge the battery.

Again, I'm wondering if there is something in the harness that keeps the alternator from charging just as the oil pressue switch kept the fuel pump from running until I hooked up the switch?

Thanks in advance!!

Ken

05-23-2008, 04:47 AM	#1
87Lowrider Navy Radioman Veteran Join Date: Jul 2007 Location: Western Kentucky Posts: 1,356	Alternator won't Alternate Alright, On my '87 SWB, I installed the '76 454 in and got it running last week. Having problems now with the charging system. I used the original wire to the alternator and the original alternator from the '87. It worked fine in November when I dismantled the system and pulled the 350. Now, it won't charge the battery. Again, I'm wondering if there is something in the harness that keeps the alternator from charging just as the oil pressue switch kept the fuel pump from running until I hooked up the switch? Thanks in advance!! Ken __________________ 1987 Chevrolet R10 Silverado BBC Build thread - SOLD 1986 GMC Sierra Classic - SOLD 1957 Chevy Step Side Daily Driver; 2005 Chevrolet Silverado 4x4 Z71 Stepside - SOLD 2005 Chevrolet Tahoe Z71 Last edited by 87Lowrider; 05-23-2008 at 04:49 AM.



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