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Re: [GMCnet] Electrical gremlins, charging set up, and questions [message #310478 is a reply to message #310474]

Thu, 17 November 2016 12:59

emerystora

Messages: 4442
Registered: January 2004

Karma:

Senior Member

I have posted this several times over the years:

1973 through 1976 models had two relays in that area. The one above the horn is the blower relay for the heater/ air-conditioning blower.
Late 1977 and 1978 models had a third relay at the top which was a delay relay.

The delay relay is the smaller relay at the very top of the panel. It has two leads - on mine they are brown and yellow and one has a male and the other a female terminal at the end of the leads. The leads are approx. 6 to 8 inches long. The female one connects to the male terminal on the lead to the blower motor. The male one leads to the short lead (purple on mine) that goes to the blower relay (terminal 1). If the delay relay burns out you can plug the male motor lead directly into the short female lead going to terminal 1 on the blower relay.

The blower relay (below the delay relay but above the horn relay) has 5 terminals. When the blower relay is mounted with the 5 terminals down, there are two on the left, one in the middle and two on the right.

On the back left side it is #3 which has a red/white wire that leads to a fusible link and that goes into the harness and connects to the red wire from the alternator to the center stud of the battery isolater.

On the front left is terminal #2. Mine has a dark blue wire that leads to the resistor package in the right side of the heater box.

In the center is terminal #1. Mine has a short purple wire with a female connector. The male lead from the delay relay plugs into this (on mine right now I have the blower motor plugged into this as my delay relay is bad and disconnected).

On the right rear is terminal #5. This has a short black lead that goes to a ground screw.

On the right front is terminal #4. This has an orange wire that leads to the heater controls on the dash.

Terminals 4 & 5 control the coil in the blower relay.

Terminals 1 & 2 are normally closed and operate the blower when in low or medium speeds.

Terminal 1 & 3 are normally open but when the dash switch is put in "high" or "max" it actuates the coil and the relay connects these terminals which give power to the blower directly from the alternator in order to get higher voltage and higher blower speed. At the same time it disconnects terminal 2 from the circuit.

Emery Stora
77 Kingsley
Frederick, CO

> On Nov 17, 2016, at 11:07 AM, Adam Metzger wrote:
>
>
> http://i66.photobucket.com/albums/h252/adammetzger/front%202%20notes.jpg
>
> here is a overview pic with notes. according to my schematics, the relay with purple, black, dk blue, orange, and red dbl white wires is the BLOWER
> relay.
>
> Thoughts?
>
> --
> 1976 Palm Beach
> Austin, TX
>
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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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