Forum Discussion

2lazy4U's avatar
2lazy4U
Explorer
May 22, 2016

Need a battery in your TT for your tail lights to work?

I have a feeling this is a dumb Q, but so be it. I have a bad battery in my TT, and the taillights/blinkers etc. don't work. I removed the battery, but the lights still don't work when plugged into my...
SoundGuy's avatar
SoundGuy
Explorer
May 22, 2016
2lazy4U wrote:
Should the lights work directly from my car's 7-pin plug even w/o a battery in the TT, and I therefore have two separate issues?


Yes to both ... your trailer battery, or lack thereof, has nothing to do with the trailer's running / brake lights. Time to get out your voltmeter and do some checking - here are the pinouts for the 7-pin Bargman connectors.

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