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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

1981 F100 gauge cluster wiring diagram ?

 
  #1  
Old 09-21-2014, 12:05 PM
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Question 1981 F100 gauge cluster wiring diagram ?

Does anyone have a link to the gauge cluster wiring for a 1981 F100 Custom ??


The Haynes manual is showing 14 wires but the truck has 18 wires in 16 positions (2 wires doubled up in two positions)
The color of the wires also don't match....


..... very confusing....




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Old 09-21-2014, 02:02 PM
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Here's the info from a 1981 Ford Electrical, Vacuum, and Troubleshooting Manual:





 
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Old 09-22-2014, 01:37 PM
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Thank you very much



Any chance you also have a list of what each of the wires go to/are for on the 18 spot terminal block ?





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Old 09-22-2014, 10:53 PM
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I'll check tomorrow afternoon.
 
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Old 09-22-2014, 11:33 PM
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I mapped mine out I will try to list what I remember from memory as it was done when I restored and converted my gauges over to LED illumination.

The light blue with red tracer is for illumination. That will be number 5. I cant remember on the turn signals but I do recall them being Dark Green with a Light Green tracer I want to say this one was left turn signal. Then the other turn signal wire was yellow with a light green tracer.

I may be wrong on these though its been a few months since I maped them out. Once you get the gauges out you can use the above layout and trace the circuits on the circuit boards to where they go and youll have what wire is what. That is how I did it for mine as I had a lot of time that week at work from how slow it was so I maped out the circuits and wrote it down. Not sure where that note is now though.
 
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Old 09-23-2014, 11:10 AM
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it appears the wires have a lot of kinks in them where they go into the connector like someone has been removing/switching them around.
Just trying to make sure everything is correct before I go throwing parts at any suspected problems.




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Old 09-23-2014, 07:44 PM
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I can't find all the info in one place, so will do my best to pull it together here, although I didn't find Circuit 450:
  1. Circuit 30 - Bk/LG:Power, but not truly 12v as it is after the 8 to 9 ohm resistor
  2. Circuit 57 - BK: Ground
  3. unused
  4. Circuit 29 - Y/WH: from fuel sender or fuel tank switch
  5. Circuit 19 - LB/R: Instrument illumination from Fuse 17 & the dimmer
  6. Circuit 39 - R/W: Coolant sender
  7. unused
  8. Circuit 655 - R/O: Negative side of shunt to ammeter
  9. Circuit 654 - Y/LG: Alternator/positive side of shunt for ammeter
  10. Circuit 31 - W/R: Oil pressure sender
  11. Circuit 11 - DG/Y dash:To tach from negative side of coil
  12. Circuit 60 - BK/LG dash: From tach - ground it for a V8 and not for a 6
  13. Circuit 640 - R/Y hash: Power from Fuse 18 to brake warning light & tach
  14. Circuit 977 - P/W: To Dual Brake Warning Switch
  15. Circuit 2 - W/LB: Right turn signals
  16. Circuit 12 - LG/BK: High beam indicator
  17. Circuit 3 - LG/W: Left turn signals
  18. Circuit 450 - DG/LG:
 
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Old 09-23-2014, 09:11 PM
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If it wasnt so hard to get my old instrument cluster out I would find out what circuit 450 is. I have the dash pigtail I use that came with the used tach cluster I bought as a tester and I can find which circuit it is and trace it out on the circuit board.

But that would have to be some other day, long day an I am about to turn in for the night and too tired to move everything to get to the old cluster.
 
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Old 09-23-2014, 09:20 PM
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I will keep a link to that post, so if you find it let me know and I'll edit it for completeness.
 
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Old 09-23-2014, 09:40 PM
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Originally Posted by Gary Lewis View Post
I will keep a link to that post, so if you find it let me know and I'll edit it for completeness.
Sure thing, probably will be this weekend I need to do some cleaning anyways got too much stuff I cant find that I was using on the truck when I did the gauge conversion and restoration few months back.
 
 
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