Wiring a 12v rheostat to a gauge that has only one wire?


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Old 04-29-11, 04:05 PM
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Question Wiring a 12v rheostat to a gauge that has only one wire?

I need a some help wiring a light equipted 12v gauge which needs to be dimmed for nightime driving. The gauge has one wire for the light coming out of the back of it, so all the rest of the wiring is in the inside the gauge. I am thinking about wiring in a rheostat to control the brightness of the light, but with only one wire present I am stumped on the "how do I" part of the equation. Any suggestions would be very welcome, my thanks in advance....
 
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Old 04-29-11, 05:30 PM
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12VDC+ in to one side of the rheostat. The wire from the bulb to the other side of the rheostat.
 
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Old 04-29-11, 10:32 PM
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The lamp in the gauge grounds through the gauge wiring. If you can connect it to any of the other gauge lamp wires it will dim with the dashboard dimmer.
 
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Old 04-30-11, 09:12 AM
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Thank you Moderators

I wish to thank both of the moderators who replied to my post and gave me two different ways to accomplish what I want to do. I was pretty worried that no one would answer my question.

Thanks again
 
 

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