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Alternator issues 1976 Palm Beach [message #347542]

Mon, 09 September 2019 08:07

Samuel Ferguson

Messages: 107
Registered: September 2019
Location: Pittsfield, Illinois

Karma:

Senior Member

I am experiencing a charging issue with the engine battery on a 1976 GMC Palm Beach Motorhome. I had the engine battery to go dead while going down the highway. I took the alternator off and took it to NAPA parts store for a bench test and was told the alternator was "dead"! I replaced with a remanufacture alternator. After doing so, I started the engine and the "GEN" light came on. I turned the ignition off and waited a couple of minutes an re-started the engine. After re-starting, the "GEN" went off, but it still did not appear to be charging. I checked the battery and am showing 12 volts. I checked the "red" wire to the alternator prior to starting the engine again and I do not have any power. I started the engine and am still not getting and voltage reading on the red wire to the alternator.

The "yellow" wire coming from the alternator plug is showing 12 volts when I check it against the brown wire next to the yellow wire in the plug.

I have traced the red, yellow, and brown to the from of the hood area looking for an in-line fuse link or a voltage regulator box (Nothing found). All three wires run to the hood area and after doing so, the red wire is piggy-backed with another red wire running to a blue box {mounted on the back wall with GMC 706751 labeled) with one red wire going to a solenoid. The yellow wire coming from alternator runs to the hood area and is pig-tailed with a red wire, which the red wire goes to one of the three post on top of the blue GMC 706751 box.
I did discover today, when I turn the house battery on, the red wire on the alternator is reading 12 volts. Turn house battery off and turn engine battery on, no voltage reading on the red wire at alternator.

I am trying to find out of the blue GMC box is the problem or would it be a bad solenoid? I have attached a couple of pictures of the blue box and the solenoid.

Any assistance will be greatly appreciated.

Samuel Ferguson

Samuel Ferguson Summer Hill, Illinois (West Central Illinois) 1976 GMC Palm Beach

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[Message index]

		Alternator issues 1976 Palm Beach By: Samuel Ferguson on Mon, 09 September 2019 08:07
		Re: Alternator issues 1976 Palm Beach By: jhbridges on Mon, 09 September 2019 08:18
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Mon, 09 September 2019 11:28
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Thu, 12 September 2019 21:30
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Thu, 12 September 2019 22:10
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: rallymaster on Sat, 21 September 2019 20:46
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 21:01
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: rallymaster on Sat, 21 September 2019 21:03
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: rallymaster on Sat, 21 September 2019 21:11
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Mike Kelley on Fri, 13 September 2019 12:22
		Re: Alternator issues 1976 Palm Beach By: RF_Burns on Thu, 12 September 2019 22:02
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Thu, 12 September 2019 22:21
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Fri, 13 September 2019 12:47
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Mike Kelley on Fri, 13 September 2019 14:15
		Re: Alternator issues 1976 Palm Beach By: JohnL455 on Fri, 13 September 2019 18:36
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Fri, 13 September 2019 19:33
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Stu Rasmussen on Fri, 13 September 2019 19:46
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Stu Rasmussen on Fri, 13 September 2019 19:42
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Fri, 13 September 2019 20:17
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Bruce Hart on Fri, 13 September 2019 20:25
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Fri, 13 September 2019 20:32
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: ljdavick on Fri, 13 September 2019 20:41
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Stu Rasmussen on Fri, 13 September 2019 21:03
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Fri, 13 September 2019 22:21
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: ljdavick on Sat, 14 September 2019 00:34
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Burton on Fri, 13 September 2019 21:21
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 14 September 2019 09:40
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: James Hupy on Sat, 14 September 2019 09:58
		Re: Alternator issues 1976 Palm Beach By: Ken Burton on Sat, 14 September 2019 12:42
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Sat, 14 September 2019 17:31
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 14 September 2019 10:12
		Re: Alternator issues 1976 Palm Beach By: C Boyd on Sat, 14 September 2019 10:47
		Re: Alternator issues 1976 Palm Beach By: C Boyd on Sat, 14 September 2019 10:50
		Re: Alternator issues 1976 Palm Beach By: jhbridges on Sun, 15 September 2019 18:44
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Fri, 20 September 2019 20:32
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Sat, 21 September 2019 04:20
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 13:50
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: James Hupy on Sat, 21 September 2019 14:19
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 14:44
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: James Hupy on Sat, 21 September 2019 14:53
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 15:17
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 16:10
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 17:04
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Matt Colie on Sat, 21 September 2019 16:13
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 17:00
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Matt Colie on Sat, 21 September 2019 17:31
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: James Hupy on Sat, 21 September 2019 18:12
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 19:09
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: James Hupy on Sat, 21 September 2019 19:20
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 19:39
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 19:46
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 20:08
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 20:26
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 20:33
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 20:55
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 21:04
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 21:20
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 21:27
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 21:29
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Sat, 21 September 2019 21:54
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 22:09
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Sat, 21 September 2019 22:16
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sat, 21 September 2019 22:25
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Bruce Hart on Sun, 22 September 2019 05:58
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sun, 22 September 2019 08:58
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Sun, 22 September 2019 09:44
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sun, 22 September 2019 10:42
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Emery Stora on Sun, 22 September 2019 18:00
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: C Boyd on Sat, 21 September 2019 21:25
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Sat, 21 September 2019 19:29
		Re: Alternator issues 1976 Palm Beach By: jhbridges on Sun, 22 September 2019 09:53
		Re: Alternator issues 1976 Palm Beach By: Samuel Ferguson on Sun, 22 September 2019 10:47
		Re: [GMCnet] Alternator issues 1976 Palm Beach By: Ken Henderson on Sun, 22 September 2019 11:52
		Re: Alternator issues 1976 Palm Beach By: jhbridges on Sun, 22 September 2019 10:56

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