Fog Lights not turning on

[skiadero]

Fog lights are not coming on in my 16 Trail... fuse is okay, not sure what else it could be, they were fine, than nothing. I have the new LED ones that go in the TRD. Any help? Thank you

 

[TheLincolnGreen]

Might be obvious, but are you trying with the low beams on? Not sure about the newer ones, but the 3rd gen only works with low beams.

 

[Dillusion]

Hook them straight up to the battery and see if they even work out of the box.

 

[Bumbo]

Not sure if these are just bulbs or new lights with relay harness...

Troubleshooting ideas:

Confirm the lights work (connect directly to battery)
Check the relay for function (measure voltage at output and confirm its even switching)
Check for voltage at the switch
Check the switch for function using the continuity function on the meter.

If it's just a bulb, you can connect that directly to a battery to make sure it works. Alternately, put the stock bulb back in and make sure the system as a whole still functioning.

 

[hockeygurl39]

could be a fuse or wiring... hook up to battery I had the same problem