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Electrical 3rd Gen Dodge Ram Electrical Problems and Questions.


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  #1  
Old 11-19-2011, 01:06 AM
Stangshcky12 Stangshcky12 is offline
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Default Only have third brake light

Lamp out came on the dash two weeks ago for a passenger side tailight. Replaced it an not long after lamp out came back on again. Ive just been ignoring thinking it was something in the passenger side circuit. I know tr reverse light goes on and off with bumps.
Followed my girlfriend home tonight and thought I was going crazy at first

Sooooo any guess?
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Old 11-19-2011, 04:10 AM
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I notice that your 3rd brake light isn't on,
I don't know if it is tied into the same circuit, or even if you have one
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Old 11-19-2011, 08:58 AM
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Default

If the bulbs/sockets are OK, I'm willing to bet you have a bad FCM (Front Control Module). It's the module that lives below the IPM (Fuse Box). The High Level Brake light is powered completely separately, which explains why it still works.

BTW - The FCM is not too expensive, and is a common repair item.
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Old 11-22-2011, 09:18 PM
Stangshcky12 Stangshcky12 is offline
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Well I feel stupid. Because both were out I figured it was an electrical problem. Pulled the taillight today and checked both sides with a test light and had power to both sockets. Turns out both bulbs went dead at the same time right after I replaced the turn signal. We all know what happens when you assume...
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