Which Wire Do I Use

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Jul 21, 2007 | 12:00 PM

#1

w8jumper

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Which Wire Do I Use

I am installing a trans temp gauge and my test light has broke on me. I need to know what color wire to use for the bulb in my gauge. 03 F350 SD with auto on headlight function. I would like to be able to leave my headlight switch in the auto on position and still have the gauge come on when my headlights decide to come on. Any help is appreciated.

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Jul 21, 2007 | 01:28 PM

#2

Franklin2

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You need to find a blue/red wire under the dash. This will make it work with the other gauge lights, and you will be able to dim the new guage with the other guages using the factory control.

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Jul 21, 2007 | 02:23 PM

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w8jumper

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Thanks, I tried that and it worked like a charm

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