Troubleshooting Turn Signals Not Working After Installing Curt Wiring Harness on 2009 Mazda 5

Updated 03/13/2019 | Published 03/11/2019

Question:

2009 mazda 5 trailer wire loom - i installed your 4 wire trailer wire loom on my mazda 5 and now my turn signals do not work on my car , this is without the trailer hooked up can you help

asked by: Ed N

Expert Reply:

If just the turn signals are not working on your 2009 Mazda 5 after installing the Curt Wiring Harness # 56016 I would start by checking to see if you may have blown a fuse. According to the online version of the owner's manual I saw the turn signal lights are in position 50 in the engine compartment fuse block.

Should the fuses not be an issue I believe the issue is likely a poor ground. It is important that the white ground wire be attached to a bare metal surface that is free of any paint, dirt or corrosion. A poor ground can be the cause of all types of issues and is the reason behind a great many wiring conundrums.

I have added a link to a help article on trailer wiring troubleshooting for you to check out as well, which I recommend taking a look at.

expert reply by: Kyle S