MAZDA 3 HEADLIGHT DOESNT WORK
 

HEADLIGHT WORKS WITH BRIGHTS ON, BUT IT DOESNT WORK ON LOW BEAMS AND I CHANGED THE BULBS ALREADY BUT STILL DOESNT WORK

RE: MAZDA 3 HEADLIGHT DOESNT WORK
 

Have you checked the fuses?
Also you don't say if it's both or just one. From your post it's hard to tell.
If neither is working, check the relay.

RE: MAZDA 3 HEADLIGHT DOESNT WORK
 

also check the wiring, and the connections.
try using a voltmeter, and testing the connections to see if they are getting power. if they arent, then check the wiring, and other connections. also check to make sure the switch is working too