Trailer turn signals not working

2012 with the tow package.

I've done the DRL delete and changed flasher modules to prevent fast flash with LED lights. That was 4 or 5 years ago. Now, the trailer turn signals are not working. The turn signals on the truck work.

I'm not sure if this is a new problem, or if I just haven't noticed until now. Does the trailer use the same flasher module, and is this the likely problem?

 

Yes the flasher relay is responsible for trailer stop and turn signals with the towing package.

 

Any suggestions for a flasher module that will support the trailer and not fast flash?

 

There is no known 12 pin flasher for LEDs but you can modify the stock 12 pin flasher to work with LEDs.

https://www.tacomaworld.com/threads/12-pin-dtrl-led-flasher-modification-2012-tacoma.244028/

 

Thanks. Unfortunately I can’t find the original parts. I’m not too keen on re-enabling the DTRL either.

Looking at the OE wiring diagram it appears it may be possible to jumper the tow signal output at the flasher module. I haven’t found any posts like that, do you know if it’s a possibility?

 

There would be 2 problems with that, first off you would have no brake lights on the trailer, second you would likely blow the turn/hazard fuse due to the extra electrical load.

DRL would be easy to disable, simply snip the Light Green/Red DRL wire at Pin 5 of the flasher relay.