Turn Signals Coming on Under Braking

got a 07 x-runner....Took a hour trip yesterday.....now when apply the brake the passenger side front and rear turn signals light up....weird.....uh

checked for shorts and what not, cant find anything wrong.....

any help would be appreciated!!

 

do you have a towing harness? Similar thing happend to my dads 1st gen and it turned out the towing harness was installed wrong

 

i do have a tow hitch....but i never use it or messed with it....it looks ok?

 

The signal converter box is screwed on your harness. Disconnect it to confirm.

 

where would that be located???

 

ok i disconnected the t-harnesses from the taillights and plugged them back to factory harness....lights seem to work properly now...weird??

does that mean the trailor harness is faulty.....Never had any problems with it before...

what needs to be replaced?

 

Replace your trailer harness, sounds like water got inside that black box and shorted some stuff out.

 

Check to make sure the harness isn't corroded. This exact thing happened to me, when I applied the brakes the terminals on the harness (at the trailer connector end) where corroded enough to "touch". This caused the voltage to back feed to the turn signals.

Shawn

 

Check to make sure the harness isn't corroded. This exact thing happened to me, when I applied the brakes the terminals on the harness (at the trailer connector end) where corroded enough to "touch". This caused the voltage to back feed to the turn signals.

Shawn

 

Great tips Thanks guys...