Starting a 73-79 Wiring Tech Thread
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Joined: Apr 2009
Posts: 14,333
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From: Stanley, VA
The resistor wire runs from the printed circuit plug on the back of the instrument cluster to a splice behind the cluster were it is joined by two other wires, both black w/ green stripe. One of these goes to the ignition switch, the other to fuse F10. Neither of these other two are resistor wires.
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Joined: May 2013
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From: Fort Worth
i found another pic online... I belive the loose connector on the anti-dieseling thorttle positioner connects to the green connector that is on the far right of the picture. only half the connector is showing in the pic. In the photo I saw this wire is routed around the passenger side of the carb and plugged into the spade on the positioner wire. Thought I would post my findings just in case anyone with the same issue was looking.
Last edited by lazzarruss; Oct 25, 2013 at 03:53 AM. Reason: grammatical
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Joined: May 2013
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From: Fort Worth
mikeo0o0o0 said: Clean it off, if the wire is white w/ red stripe its for oil pressure, red w/white stripe it for the coolant temp
lazzarruss Said: But some some carb cleaner cleaned it enough that I could see it better....It is red.
I'm thinking Laz was saying red, as in with the white stripe, and the location of the plug (picture is sideways judging by the dizzy under your finger tips and the top rad hose that you hand is against) that would be for coolant temp guage.
Is that an aftermarket temp guage in the truck under the dash left of the steering? In the other picture it looks like there is an armored mechanical temp guage tube running in the firewall hole with the plug pushed in, the one to the left of the main harness plug. My guess would be someone disconnected the factory temp guage and put in an aftermarket one. Does the dash guage work?
lazzarruss Said: But some some carb cleaner cleaned it enough that I could see it better....It is red.
I'm thinking Laz was saying red, as in with the white stripe, and the location of the plug (picture is sideways judging by the dizzy under your finger tips and the top rad hose that you hand is against) that would be for coolant temp guage.
Is that an aftermarket temp guage in the truck under the dash left of the steering? In the other picture it looks like there is an armored mechanical temp guage tube running in the firewall hole with the plug pushed in, the one to the left of the main harness plug. My guess would be someone disconnected the factory temp guage and put in an aftermarket one. Does the dash guage work?
your right about there being an after market gauge... There is an "armored wire" running to it. There are also two wires hanging off of it. one red ond black. from the from I had assumed it was disconnected, so I had not addressed that. Looked at it today and I guess those wires are for lighting. Yes the gauge works, although no sure how accurately. It shows my engine get to about 205 degrees when fully warmed up.
Elder User
Joined: Jul 2010
Posts: 543
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From: Gilmer, TX.
This thread was enlightening. For those of you who don't know, I now have Ted's crew cab. This thread gave me an eye into the mind of the person that did the last wiring job, that I'm now troubleshooting and customizing.
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