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Passenger brake light out

853 Views 6 Replies 4 Participants Last post by  speedlever
This is the 2nd time this has happened and it magically fixed itself the first time. The rear passenger brake light it out. I checked the bulb and it is fine. I have a VOM so I can see the filament is continuous. I checked for 12 v. at the socket when pedal depressed and got nothing. I checked for 12 v at the first rear harness with pedal depressed for green wire with yellow strip and black common wire socket connection and still got nothing. I went to the front fuse panels and pulled all the fuse for R and L bottom real light and they are all fine.

I don't understand what the hell is going on here. I did get a slight fender bender last week that damaged my front passenger and the bumper and I don't know if that is related show how. It doesn't seem likely since most of the damage can be buffed out.

Any ideas what is going on here or what could be causing this?
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The fuses are fine by sight or test meter? I've had bad fuses that looked fine. Swap/change and check again.
I would check for power in and out of the fuse. Does your RL have a 4pin and 7pin tow connection. On mine the 4 pin looks like it was added at the dealer. They spliced in behind the rear driver's light. This splice is just asking to go wrong. If you have a 4 pin connection I'd give that a look.
The fuses are fine by sight or test meter? I've had bad fuses that looked fine. Swap/change and check again.
Ok, I'll check them with a VOM, however, I seriously doubt it. Question really is which fuse is it Rear L/Lo Light or Rear R/Lo Light ?

Is right or left determined by looking at the vehicle or sitting in it. Now there is a place where there is no fuse and looking at the box it says there is no fuse there but I find it strange that this is smack dab is at the 3/4 side of the line of fuses.

It seems to me that I fixed this before by thumbing the bulb housing but that doesn't make sense given I'm not seeing voltage.
I would check for power in and out of the fuse. Does your RL have a 4pin and 7pin tow connection. On mine the 4 pin looks like it was added at the dealer. They spliced in behind the rear driver's light. This splice is just asking to go wrong. If you have a 4 pin connection I'd give that a look.
It is a pretty elaborate 7 pin keyed connector (4 wires on one side, I can't see the other side but I assume there are 3 wires there...there are at least 2 wires) that goes back to a water tight connection for the tow. I don't see any splicing that was done. However, that would be another place to test for voltage....what 2 pins would I check there for brake voltage to the passenger brake light?

I don't know exactly which fuse. I can see it is Rear Low bulb but there is a Right and a Left.
Does anyone have a wiring diagram that can tell me if the passenger side brake wire harness travel into the passenger front fender/fender well or passenger side bumper?
I can't tell you anything about the wire routing, but here's a circuit diagram of the 2009-13 brake lights.

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