Author Topic: 1968 Shelby Vert Ammeter/Junction Block Wiring  (Read 3890 times)

Offline Shelby2000

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1968 Shelby Vert Ammeter/Junction Block Wiring
« on: November 20, 2024, 01:43:40 PM »
Having looked at previous posts, pictures and wiring diagrams on this subject, I am still confused on wiring connections to junction block and solenoid.
1. Mustang wiring diagrams show a fusible link from positive side of solenoid to the junction block. The power feed for top motor connects to this. Makes sense.
2. The Shelby assembly manual shows the console ammeter wiring (I'm using the AMP harness) red lead to the positive side of solenoid, connected to ammeter. The black lead then goes from ammeter to the junction block.
3. My question then becomes A: What happens to fusible link as it is now bypassed by ammeter, and how is circuit protected? and B. How does ammeter measure current as it it would only see draw from top motor? Do I switch the yellow regulator wires from the positive side of solenoid to the junction block?

Thanks for any help.

Offline Coralsnake

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #1 on: November 20, 2024, 03:53:15 PM »
There are two different junction blocks. The convertible top wires do not use the same junction block as the alternator gauge.

Offline Bob Gaines

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #2 on: November 20, 2024, 04:45:58 PM »
Picture of the 68 Shelby gauge junction block and the convertible fusible link junction block.
Bob Gaines,Shelby enthusiast, Shelby collector , Shelby concours judge SAAC,MCA,Mid America Shelby

Offline Shelby2000

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #3 on: November 20, 2024, 05:12:31 PM »
Got it a nd makes sense. What wire then marries up to the ammeter junction box in addition to the ammeter lead?

Offline Coralsnake

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #4 on: November 20, 2024, 07:06:36 PM »
The black lead from the alternator gauge goes on the junction block with the double lead from the headlight harness. There is also a single lead from the alternator.

The red lead from alternator harness goes on the positive side of the solenoid.

Offline Bob Gaines

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #5 on: November 20, 2024, 07:14:26 PM »
Wiring diagram for 67 and 68.
« Last Edit: November 20, 2024, 07:16:31 PM by Bob Gaines »
Bob Gaines,Shelby enthusiast, Shelby collector , Shelby concours judge SAAC,MCA,Mid America Shelby

Offline Shelby2000

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #6 on: November 20, 2024, 07:18:20 PM »
Thats what I was looking for. thank you both!

Offline Bob Gaines

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #7 on: November 20, 2024, 07:19:59 PM »
Thats what I was looking for. thank you both!
It takes a village as they say. ;)
Bob Gaines,Shelby enthusiast, Shelby collector , Shelby concours judge SAAC,MCA,Mid America Shelby

Offline J_Speegle

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #8 on: January 20, 2025, 03:26:57 AM »
It takes a village as they say. ;)

Yes but that saying refers to (or originally did) orphans  ;)
Jeff Speegle

Anything worth doing is worth doing concours ;)

Offline Bob Gaines

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #9 on: January 20, 2025, 11:49:48 AM »
Yes but that saying refers to (or originally did) orphans  ;)
Jeff the original proverb talks about a child not a orphan .  Regardless the phrase has been often recited in American culture for many purposes, most of which generally mean that it takes teamwork which was my meaning also. ;)
Bob Gaines,Shelby enthusiast, Shelby collector , Shelby concours judge SAAC,MCA,Mid America Shelby

Offline J_Speegle

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Re: 1968 Shelby Vert Ammeter/Junction Block Wiring
« Reply #10 on: January 20, 2025, 04:53:23 PM »
Jeff the original proverb talks about a child not a orphan .  Regardless the phrase has been often recited in American culture for many purposes, most of which generally mean that it takes teamwork which was my meaning also. ;)

Guess it depends on whom you ask. Immigrants I know stated for them and their region/village it was orphan, didn't happen to ask exactly what country or region they immigrated from but sorry I took the subject off course a little  ::)
Jeff Speegle

Anything worth doing is worth doing concours ;)