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1975 F100 gauge cluster wiring

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Old Feb 11, 2020 | 12:47 AM
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1975 F100 gauge cluster wiring

I have spent all night looking for a gauge cluster wiring diagram with very little luck. I found the attached diagram on a painless wiring installation instruction pdf that present the wiring color layout but not where the corresponding wires go. Does anyone have recommendation where to find the wiring?
 
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Old Feb 11, 2020 | 08:29 AM
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Originally Posted by Davidmartin
I have spent all night looking for a gauge cluster wiring diagram with very little luck. I found the attached diagram on a painless wiring installation instruction pdf that present the wiring color layout but not where the corresponding wires go. Does anyone have recommendation where to find the wiring?
Go here: https://www.fordification.net/tech/wiring.htm They have the complete '75 factory wiring diagrams.
 
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Old Feb 11, 2020 | 11:04 AM
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Originally Posted by mikeo0o0o0
Go here: https://www.fordification.net/tech/wiring.htm They have the complete '75 factory wiring diagrams.
Mike, thank you for the response! I came across the diagrams last night but haven't had much luck interpreting. The wire colors dont match my connector. I will spend more time looking at them today at lunch.
 
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Old Feb 11, 2020 | 10:35 PM
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Maybe?



 
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Old Feb 12, 2020 | 02:39 PM
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Originally Posted by 77&79F250
Maybe?
Thank you!!!! My connector has a few more wires than the diagram but the wire colors do match! Thank you again!
 
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Old Feb 12, 2020 | 02:52 PM
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So do you have an 13 pin connector? Been here? https://www.ford-trucks.com/forums/1...l#post17135552

Ever see one of these? https://www.classiccarwiring.com/197...iring-diagram/



 
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Old Feb 14, 2020 | 02:32 PM
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Originally Posted by 77&79F250
So do you have an 13 pin
No, my connector is 18 pin, but only 14 circuits are being used.
 
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Old Feb 14, 2020 | 06:08 PM
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18 pin connector means you have a instrument cluster with gauges not one with idiot lights.
pic below is from the Ford wring diagrams for 1975 F150/250. couldn't get it to rotate though...sorry.
The wires themselves are the same, i.e a high beam indicator wire is the same wire for a gauge cluster or an idiot light cluster.
They are just "pinned" into the 14 pin or 18 pin connector body in different locations.
I converted my F250 from a 1975 idiot light cluster to a 1975 gauge cluster by unpinning the wires from the idiot light cluster connector and re-pinning it into an 18 pin gauge cluster connector.
Tbruz

 
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Old Feb 15, 2020 | 09:53 AM
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Originally Posted by tbruz
18 pin connector means you have a instrument cluster with gauges not one with idiot lights.
pic below is from the Ford wring diagrams for 1975 F150/250. couldn't get it to rotate though...sorry.
The wires themselves are the same, i.e a high beam indicator wire is the same wire for a gauge cluster or an idiot light cluster.
They are just "pinned" into the 14 pin or 18 pin connector body in different locations.
I converted my F250 from a 1975 idiot light cluster to a 1975 gauge cluster by unpinning the wires from the idiot light cluster connector and re-pinning it into an 18 pin gauge cluster connector.
Tbruz
Thank you!!! I'll work to that!
 
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Old Feb 15, 2020 | 01:08 PM
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One additional bit of info I did during my Idiot light to gauge swap.
I added a RocketMan voltmeter conversion. This was done by adding two discrete wires, one to direct 12V and one to negative, outside of the existing harness wires as the direct feed to the Rocketman voltmeter.
I then wired the existing idiot light cluster ammeter wires into the seat belt position( I replaced the seatbelt lens with the ALT lens) so the ALT light glows at start up and I get real voltage readings on the Rocketman voltmeter from the two discrete wires.
Sounds more complicated than it really is.
Tbruz
 
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Old Oct 16, 2020 | 11:28 AM
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Originally Posted by 77&79F250
Maybe?

none of these are my gauges. There seems to be one more gauge pack. Mine has the high beam light on the right side as the warning light and a brakes warning light on the left. My high beam isn’t at the top center position.

 
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Old Dec 22, 2020 | 07:26 PM
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I have a 1982 F250 with a melted down terminal that looks just like this. Can I buy one?
 
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