Dash cluster differences and ???
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Post Fiend
Joined: May 2004
Posts: 5,277
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From: St George, SC I-95
Dash cluster differences and ???
Ive got a 79 F150 Custom with the dummy lights for the alternator and oil pressure and I want to use a Lariat dash cluster with the gauges that I have. I first noticed the plug in the back was smaller on my Custom. My next thought was to take the clusters apart and swap some parts over. Well that wont work bc the white plastic part and the printed circuit is different. Someone please help me make all this work. I would rather have a needle to look at rather than a light and I do not want aftermarket gauges
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
it is hard to do. the wiring between the 2 trucks is very different. you would be better off adding a aftermarket 2 gauge setup. they run 18.00 from www.summitracing.com
Logistics Pro
Joined: Aug 2003
Posts: 4,701
Likes: 6
If you are decent at reading schematics, then you can do it. I used a 77 idiot light harness and spliced in the plug for a 74 with guages. Assuming you use the same years, you might be able to just disconnect most of the pins, as previously mentioned. I don't recall running extra wires for the other 4 pins that were mentioned, but you may have to. There are plenty of differences between the 74 and 79 wiring harnesses and guages. Maybe a 79 will already have all the wires you need.
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Post Fiend
Joined: May 2004
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From: St George, SC I-95
Well Im not going to swap the harness and Id rather not cut the wires at the connector so I guess Im SOL. Thanks for the help.
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Elder User
Joined: Jul 2005
Posts: 969
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From: North Texas
Aftermarket oil pressure and volts guages are cheap and easy to install. I highly recommend them. They can keep you out of trouble, especially when a idiot light bulb burns out on you guage cluster. I mounted mine under the ash tray. They are out of the way and still visable.
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Tuned
Joined: Oct 2003
Posts: 390
Likes: 2
This is for *******, I know this is an older post but I added a factory mid ship fuel tank with everything needed (tank selector valve, fuel lines all emmision caisters). Now I am switching wire harness under the dash from a truck with a midship fuel tank so I can have the factory fuel switch on the heater control panel and instrument cluster with all guages and a fuse panel with Aux Tank wiring. My question is it looks like a plug and match thing with the wire hareness, I have the altenator wires that I need with the harness. I think the altenator wires are different from dummy light to guages.I will switch out the oil sending unit for the oil gauge. My question is once I connect the wire harness to the plugs(fire wall area) that connect the wire harnes along the drivers frame, do I need to switch that wire also?? The tank selector switch which I install by the rear tank had the factory plug in the harness and the midship tank fuel sender pluged right into the factory harness plug, I should be fine with the old frame harness from tial lights to the fire wall right ?
Fleet Mechanic
Joined: Feb 2007
Posts: 1,326
Likes: 48
From: Middle TN
STGFordCrazy04
You do not have to cut the wires. You can take a small screwdriver and unlock them from the connector. The connectors have numbers for each wire slot. The most important thing is the short wiring harness going to the alt. must be changed for gages.
You do not have to cut the wires. You can take a small screwdriver and unlock them from the connector. The connectors have numbers for each wire slot. The most important thing is the short wiring harness going to the alt. must be changed for gages.
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