I had some aftermarket fog lights installed but they don't come on. Could dis be a bad relay or something else

 

Who installed them, and are they unwilling to look into the issue because you provided them?

 

Put a 12v + and minus on the plug after removingband disconnecting.
Just to ck if its the lamp or the car.
Remember if led swap the wires on testing.

Ifvthe fogs are good then findcthe fuse before huntingbforvthecrelay which should be in thevenginevcompt relay box at driver dide (relay)

I think😁