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SAAC HQ => Concours Talk => Topic started by: kasearch@ix.netcom.com on June 13, 2020, 09:32:07 AM

Title: 1969 Shelby GT500 console wiring harness question
Post by: kasearch@ix.netcom.com on June 13, 2020, 09:32:07 AM
I am installing a new center console wiring harness (from Alloy Metal), but do not have a wiring diagram (schematic) for the harness. I have one wire that I do not know what it goes to on this harness. It is on the gauge end of the harness, has an eyelet (for a screw??), and is coded green with a black tracer. The old harness (which was cut and butchered) does not have this wire. Does anyone know where this goes? And if you know the center console harness, I would also like to verify which wires connect to which post on the gauges.  Planning on purchasing new gauges from Branda, and understand that they are a little different than the stock gauges. And the final question, does anyone make, or have the Shelby schematics for all the harnesses?  I am putting new harnesses throughout the entire car because the thought of a potential fire, due to an old faulty harness, scares me.
Title: Re: 1969 Shelby GT500 wiring harness question
Post by: shlb69 on June 13, 2020, 11:06:26 AM
Somewhere I have a center console with all original wiring. If I can find will take photos
Title: Re: 1969 Shelby GT500 wiring harness question
Post by: Bob Gaines on June 13, 2020, 11:59:19 AM
If you are installing the console wiring I would suggest using some dielectric grease on the contacts at the large plugs for the switches to help make sure that they are COMPLETELY pushed together. The large plugs if not pushed all the way together and making complete contact inside causes  resistance and heat. Those plugs have a bad reputation of heating up and melting . Smoke first and then fire in you don't catch it. That melting of plugs is the reason for many cobbled up console wiring harness's found in 69/70 Shelby's. Prior to the repro harness being offered a repair of the harness that was the only course of action . Many times the repair was not done well.   
Title: Re: 1969 Shelby GT500 wiring harness question
Post by: shlb69 on June 13, 2020, 05:36:48 PM
Looks like coral snake beat me to it
Title: Re: 1969 Shelby GT500 wiring harness question
Post by: 98SVT - was 06GT on June 15, 2020, 04:43:38 PM
Trace the wire to the other end of the harness and see what it's connected to there.
Title: Re: 1969 Shelby GT500 wiring harness question
Post by: kasearch@ix.netcom.com on June 16, 2020, 07:34:46 AM
I did that and the only other green with black tracer is a pin plug in that is open next to the eyelet connector.
Title: Re: 1969 Shelby GT500 wiring harness question
Post by: Coralsnake on June 16, 2020, 07:49:18 AM
That green/black bullet wire connects to the oil pressure wiring lead from under the dash, the eyelet to the gauge.
Title: Re: 1969 Shelby GT500 wiring harness question
Post by: kasearch@ix.netcom.com on July 07, 2022, 09:35:49 AM
Ok, I am finally back to working on the console wiring.  Does anyone have a source for a wiring diagram for this?  I have the supplement 1969 Shelby manual which has diagrams, but not for the center console.  I noticed that the original gauges had an open hole for the bulbs, but the new gauges use the twist in pot type of bulb.  Since the new replacement harness is set up for the original style, what is the best way to modify the components to make them operable?
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on July 07, 2022, 09:48:11 AM
You can find them by doing a search. They have been posted several times
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on July 07, 2022, 12:00:42 PM
(http://www.saacforum.com/gallery/8-130620110635.jpeg)
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on July 07, 2022, 12:01:22 PM
(http://www.saacforum.com/gallery/8-130620110617.jpeg)
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on July 07, 2022, 12:02:20 PM
(http://www.saacforum.com/gallery/8-130620110540.jpeg)
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on July 07, 2022, 12:03:12 PM
(http://www.saacforum.com/gallery/8-130620110522.jpeg)
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on July 07, 2022, 12:03:59 PM
(http://www.saacforum.com/gallery/8-130620110500.jpeg)
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: kasearch@ix.netcom.com on July 08, 2022, 07:28:34 AM
A picture (or more) is worth a thousand words.  Thanks, that really helped.
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on July 08, 2022, 02:32:30 PM
👍
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Danc1969 on May 16, 2023, 10:36:56 AM
Sorry I know this an old topic however it is the closest topic to my question. Is anyone aware if 69-70 Shelby center console wire harness completes the circuit for the wiring that powers the entire car?
I replaced my heater core and before installing the center console figured i would test all dash functions after having removed everything, when i hooked up the battery I had no power,
I spent 5 hours looking for bad grounds, bad battery, bad solenoid etc...  My friend that was helping suggested maybe install the center console, i replied no way this car was designed to be powered through the center console, we'll we plugged in the console and power was restored and i was in disbelief.
I proceeded to move the console into place and the lights flickered and it lost all power, i rotated the top section of the console upward so i could see the wires and the power came back on. Make a long story short I wiggled every wire going into the consoles two main harness plugs and could not isolate which wire is causing the problem or if its the plugs themselves, even more disturbing was it lost power and came back on without me touching or moving anything i was just sitting there.   
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Coralsnake on May 16, 2023, 11:02:04 AM
I believe the Alternator wiring runs through the console.
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Bob Gaines on May 16, 2023, 12:09:17 PM
Quote from: Danc1969 on May 16, 2023, 10:36:56 AM
Sorry I know this an old topic however it is the closest topic to my question. Is anyone aware if 69-70 Shelby center console wire harness completes the circuit for the wiring that powers the entire car?
I replaced my heater core and before installing the center console figured i would test all dash functions after having removed everything, when i hooked up the battery I had no power,
I spent 5 hours looking for bad grounds, bad battery, bad solenoid etc...  My friend that was helping suggested maybe install the center console, i replied no way this car was designed to be powered through the center console, we'll we plugged in the console and power was restored and i was in disbelief.
I proceeded to move the console into place and the lights flickered and it lost all power, i rotated the top section of the console upward so i could see the wires and the power came back on. Make a long story short I wiggled every wire going into the consoles two main harness plugs and could not isolate which wire is causing the problem or if its the plugs themselves, even more disturbing was it lost power and came back on without me touching or moving anything i was just sitting there.   
The power for the entire car is routed through the amp gauge and then back to the Shelby junction block where it connects to the regular Mustang harness to provide power . By running through the gauge it shows charge or discharge depending on what is on or off.
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Danc1969 on May 16, 2023, 09:00:07 PM
Is there a known problem with the console plug connectors not making contact internally or a known problem where the Shelby junction block is spliced into the factory Mustang harness?
Currently it's maintaining power and will only loose power for a second or two so it makes it almost impossible to find it. If there is a known problem it would narrow my search.
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Special Ed on May 16, 2023, 10:25:31 PM
check reverse light wire plug.
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Bob Gaines on May 16, 2023, 11:57:06 PM
Quote from: Danc1969 on May 16, 2023, 09:00:07 PM
Is there a known problem with the console plug connectors not making contact internally or a known problem where the Shelby junction block is spliced into the factory Mustang harness?
Currently it's maintaining power and will only loose power for a second or two so it makes it almost impossible to find it. If there is a known problem it would narrow my search.
The known problem for the console plugs are the ones the toggle switches are connected to. They sometimes do not make good enough contact and because of that resistance builds up heat because all of the current running through them and sometimes to the point of melting the plugs and in extreme cases starting a electrical fire. They should always be squeezed together as far as they can go. If the plugs look distorted at all that means that they got hot in the past and at the least need to be replaced to be safe. I have hardwired the connection eliminating the plugs before to solve the problem but most just replace the harness.   The Shelby junction block is not spliced into the Mustang harness. The wires have terminal eyelets and when placed on the Shelby junction block stud make connection when the nut is tightened down that holds the terminal eyelets in place.   The Shelby junction block is not known to have a problem . You just have to make sure the nut is tightened snug.
Title: Re: 1969 Shelby GT500 console wiring harness question
Post by: Danc1969 on May 17, 2023, 11:48:25 AM
Thanks everyone, i will give an update on what i find.