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Ignition switch wiring diagram/color coding

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Old 11-16-2010, 06:45 PM
staysbroken staysbroken is offline
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Ignition switch wiring diagram/color coding

Anyone know where I could find a wiring diagram relating to the ignition switch?

When I bought my truck, the previous owner had rigged toggle switches and a push button in place of the ignition switch. So, I just snagged a complete switch and the wiring plug off a '76-ish F150 in a junkyard, and dropped it off with a locksmith to be rekeyed.
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Old 11-16-2010, 06:50 PM
Nathan Plemons Nathan Plemons is offline
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Shoot me an e-mail and I'll send you the complete 1974 wiring diagrams. Should be the same switch.
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Old 11-16-2010, 07:05 PM
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Email sent, thanks!
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Old 11-16-2010, 07:08 PM
Nathan Plemons Nathan Plemons is offline
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Should be on the way. Hope it helps.
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Old 11-16-2010, 07:16 PM
steponit steponit is offline
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The switch on the 78 is different than previous years
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Old 11-16-2010, 07:25 PM
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Yeah, I don't expect it to be completely plug and play, especially since my existing wiring is cut and spliced as much as it is already. I'll be doing a bit of testing with the multimeter to get everything working right
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Old 11-16-2010, 07:29 PM
steponit steponit is offline
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Old 11-16-2010, 09:11 PM
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Thanks guys! Hopefully the locksmith will be done rekeying the thing early tomorrow so I can get to work!

...I cleaned up my under-hood wiring pretty well yesterday and today; tomorrow is time to tackle under the dash!
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Old 11-17-2010, 08:36 AM
Nathan Plemons Nathan Plemons is offline
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I was working on getting my cluster to work and I moved something and I heard the unmistakable sound of something electrical arcing for just a split second. I got to looking around and there was as white wire behind my cluster with a stripped end connected directly to the starter solenoid terminal, otherwise connected to nothing. Glad I ripped that out before it burned the whole truck to the ground.
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Old 11-17-2010, 02:22 PM
steponit steponit is offline
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Especially since that Yellow 3-way connector is a keyed power source.
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Old 11-18-2010, 08:49 AM
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Well, apparently the switch I got was actually from a 78 truck, as the part number started with D8... All I had to do was to match up color to color, and everything works perfectly now! The color coding does match up in the diagrams you guys gave me, but there are several wires in the 78 that apparently were not in the earlier year models.

The locksmith charged me $40 to rekey the lock though, wasn't expecting it to be near that much!
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Old 11-18-2010, 09:05 AM
Nathan Plemons Nathan Plemons is offline
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That that seems a little high, but hey, at least it's working!
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08, 1979, 1995, 1999, 64l, diagram, diagrams, diesel, ford, harness, ignition, schematic, switch, truck, wiring

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