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Re: Electrical gremlins, charging set up, and questions [message #310594 is a reply to message #310570]

Sat, 19 November 2016 02:43

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma:

Senior Member

You need to closely look at the wiring diagram. The circuit for the red 12 ga wire on the horn relay terminal goes 3 places:

1. To the inside fuse box
2. To ignition switch
3. To the white wire on the alternator plug.

The white wire on the alternator plug (item 3 above) is a remote voltage sensing line for the alternator. It moves very little current. I believe the only reason GM used 12 ga. there was because the white wire was meeting the two other 12 ga. wires Items 1 and 1 above) that do carry most of the current (other than the starter) used in the engine side of the coach.

That white wire going to the alternator plug is NOT the wire carrying the current generated by the alternator and supplied to the center terminal of the isolator.

The wire carrying alternator power to the isolator center terminal is a heavier 10 ga. RED one. It has single ring terminal on it and it is mounted on a stud on the back side of the alternator.

I have no idea what this PO was trying to do here.

I am suggesting that you leave that white wire circuit and red wire at the horn relay wire alone for now. You can go back and clean it up later.

On you original problem, You need to find the 10 ga. wire connected on the single terminal on the back of the alternator and chase it down. It is the one supplying ALL charging power to the Isolator and the coach and should be mounted to the center terminal of the isolator.

I'll repeat. The white wire in the alternator plug is a voltage sense line only.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

[Updated on: Sun, 20 November 2016 06:38]

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[Message index]

		Electrical gremlins, charging set up, and questions By: Atom Ant on Sat, 05 November 2016 12:24
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sat, 05 November 2016 17:41
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Ken Henderson on Sat, 05 November 2016 18:01
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Matt Colie on Sat, 05 November 2016 21:16
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: <rallymaster on Tue, 08 November 2016 11:02
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: sgltrac on Tue, 08 November 2016 12:20
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: David del Rio on Tue, 08 November 2016 13:44
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: jimk on Tue, 08 November 2016 14:19
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: USAussie on Tue, 08 November 2016 14:46
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: k2gkk on Tue, 08 November 2016 17:42
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: USAussie on Tue, 08 November 2016 17:55
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: k2gkk on Tue, 08 November 2016 18:06
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Mr ERFisher on Sun, 20 November 2016 02:18
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sat, 05 November 2016 23:19
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Sun, 06 November 2016 01:13
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Ken Henderson on Sun, 06 November 2016 05:21
		Re: Electrical gremlins, charging set up, and questions By: Chris Tyler on Sun, 06 November 2016 07:06
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Bruce Hart on Sun, 06 November 2016 07:38
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sun, 06 November 2016 13:03
		Re: Electrical gremlins, charging set up, and questions By: Matt Colie on Sun, 06 November 2016 13:51
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sun, 06 November 2016 14:06
		Re: Electrical gremlins, charging set up, and questions By: jhbridges on Tue, 08 November 2016 09:37
		Re: Electrical gremlins, charging set up, and questions By: jhbridges on Tue, 08 November 2016 10:16
		Re: Electrical gremlins, charging set up, and questions By: jhbridges on Tue, 08 November 2016 14:51
		Re: Electrical gremlins, charging set up, and questions By: jhbridges on Tue, 08 November 2016 15:01
		Re: Electrical gremlins, charging set up, and questions By: jhbridges on Wed, 09 November 2016 08:12
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Wed, 09 November 2016 12:54
		Re: Electrical gremlins, charging set up, and questions By: A Hamilto on Wed, 09 November 2016 13:13
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Wed, 09 November 2016 16:06
		Re: Electrical gremlins, charging set up, and questions By: David del Rio on Thu, 10 November 2016 14:20
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: emerystora on Thu, 10 November 2016 14:23
		Re: Electrical gremlins, charging set up, and questions By: Matt Colie on Thu, 10 November 2016 14:30
		Re: Electrical gremlins, charging set up, and questions By: David del Rio on Fri, 11 November 2016 10:45
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Thu, 10 November 2016 18:04
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Thu, 10 November 2016 22:18
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Thu, 10 November 2016 23:07
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Fri, 11 November 2016 01:58
		Re: Electrical gremlins, charging set up, and questions By: A Hamilto on Fri, 11 November 2016 10:20
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Fri, 11 November 2016 17:12
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Fri, 11 November 2016 22:49
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sat, 12 November 2016 11:37
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sat, 12 November 2016 21:47
		Re: Electrical gremlins, charging set up, and questions By: A Hamilto on Sat, 12 November 2016 22:50
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sat, 12 November 2016 23:07
		Re: Electrical gremlins, charging set up, and questions By: Matt Colie on Sun, 13 November 2016 09:21
		Re: Electrical gremlins, charging set up, and questions By: A Hamilto on Sun, 13 November 2016 09:43
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Mon, 14 November 2016 23:16
		Re: Electrical gremlins, charging set up, and questions By: roy1 on Tue, 15 November 2016 11:46
		Re: Electrical gremlins, charging set up, and questions By: JohnL455 on Tue, 15 November 2016 19:12
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Wed, 16 November 2016 02:59
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Mr ERFisher on Wed, 16 November 2016 03:32
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Mr ERFisher on Wed, 16 November 2016 03:39
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Wed, 16 November 2016 11:57
		Re: Electrical gremlins, charging set up, and questions By: C Boyd on Wed, 16 November 2016 16:37
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Thu, 17 November 2016 01:03
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Tue, 15 November 2016 21:19
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Thu, 17 November 2016 12:07
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: emerystora on Thu, 17 November 2016 12:59
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Thu, 17 November 2016 14:21
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Thu, 17 November 2016 15:23
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Fri, 18 November 2016 14:01
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: jimk on Fri, 18 November 2016 15:43
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Mr ERFisher on Fri, 18 November 2016 17:13
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Sat, 19 November 2016 02:43
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sat, 19 November 2016 11:20
		Re: [GMCnet] Electrical gremlins, charging set up, and questions By: Mr ERFisher on Sun, 20 November 2016 02:13
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Sun, 20 November 2016 06:57
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Sun, 20 November 2016 12:46
		Re: Electrical gremlins, charging set up, and questions By: Ken Burton on Mon, 21 November 2016 01:00
		Re: Electrical gremlins, charging set up, and questions By: Atom Ant on Fri, 18 November 2016 18:29

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