ONE brake light does not work

[standup303]

Hey all, been troubleshooting my passenger side brake light and rear turn signal.

Driver side brake light and rear signal work


I do not have power at the passenger side brake light with brake applied.

I can hear the flasher going with turn signal applied to drivers side but not passenger.

I replaced the turn signal switch this morning since I was installing a new steering wheel, did not change anything.

Tomorrow I’m going to attempt to troubleshoot the flasher device. Any other advice? I guess if that has output voltage then next step is broken wire from under dash to back passenger taillight to look for?

 

[RustyRatRod]

Look for a bad ground. I THINK the "claws" on the bulb sockets ground those, like on my 64. So make sure they are clean and tight. You may have to gently bend them out a little as they lose tension over time. You didn't tell us what you have, so I don't know for sure.

 

[standup303]

Look for a bad ground. I THINK the "claws" on the bulb sockets ground those, like on my 64. So make sure they are clean and tight. You may have to gently bend them out a little as they lose tension over time. You didn't tell us what you have, so I don't know for sure.

Thanks I’ll check grounds first thing. This is on a 69 Dart.

 

[Dana67Dart]

I'm assuming you changed the bulb

 

[standup303]

I'm assuming you changed the bulb

Yes I swapped the known working drivers side to the non working passenger side and did not work.

 

[junkyardhero]

start at the tail light and work back. test light on the contacts will tell you if you have juice. if you've got juice and the test light hits, then it's a ground-- test light supplies its own ground.

so clean up the "claws" and double check that the housing is grounded and the socket is tight/clean on the housing and the bulb.

 

[67Dart273]

Learn to troubleshoot. Access the turn switch connector where it enters the column and back probe the terminals with either a light or meter. In this case a light can actually be handier. With the thing in turn, whether right or left, you should have "flash" power at the proper terminal. If so, it's in the wiring/ socket/ bulb to the rear. That wiring goes down to the left kick panel connector, down into the rocker trough and back to the rear and UNDER the rear seat, which is a common pinch point.

If you have "flashing" on one side and not the other at the switch, it is the switch at fault

DO YOU HAVE a service manual/ wiring diagram?

Download them free, at MyMopar.com. You may have to settle for Dodge vs Plymouth, or other way around, for some years,

 

[Dana67Dart]

Learn to troubleshoot. Access the turn switch connector where it enters the column and back probe the terminals with either a light or meter. In this case a light can actually be handier. With the thing in turn, whether right or left, you should have "flash" power at the proper terminal. If so, it's in the wiring/ socket/ bulb to the rear. That wiring goes down to the left kick panel connector, down into the rocker trough and back to the rear and UNDER the rear seat, which is a common pinch point

I replaced the turn signal switch this morning since I was installing a new steering wheel, did not change anything.

If you have "flashing" on one side and not the other at the switch, it is the switch at fault

Driver side brake light and rear signal work


I do not have power at the passenger side brake light with brake applied.

I can hear the flasher going with turn signal applied to drivers side but not passenger

OP replaced the TS switch but the problem still exists.

No blinker suggests there is no power or no load on the pass side