I have a 2011 Mazda CX7 Sport with the 2.5L that has a headlight issue. The driver/left side low beam is not working but high beam DOES work. Passenger/right side is having no issues what so ever. I have checked and double checked the fuse, relay, bulb and have replaced the wiring harness/connector. All of which has no good outcome. What is next?? I am at a loss of what to do?

Thanks for your time and any input

 

usually it is a blown bulb if not that you will need to track the low beam wiring on that side looking for a break i would buy a new globe first though

 

Have you swapped both low beam bulbs side to side to test bulbs vs power supply issues?

Do you have power & earth at the bulb socket?