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My right headlight started acting up the other day in my 2000 Ram. Left works as it should high, low beam, markers etc. the right however just the marker comes on and I don't believe the bulbs are bad I think I lost my ground. Wondering where the right headlight is grounded 

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44 minutes ago, DirtyDodge5.9 said:

Maybe a relay or something?

 

No relay. 

 

Wiring diagram is above. Like I said it most likely a bad fuse. Headlight fuses are in the PDC under the hood. The dimmer switch is before the headlight switch and the headlight switch is the last item heading for ground. Red is positive and black is ground. That simple.

 

+12V -> Fuse -> Headlight Bulb <- Dimmer Switch <- Headlight switch <- Ground

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