Mazda Repair: my tail lights doesnt work, harness clips, battery cables

Question
I  have 94 mazda 626 4cylinder.
when i turn the lights on at night my headlights are fine but tail lights not working.i unplug the battery cables for a minute and put that back again it worked i mean tail lights worked and suddenly they stoped working again.it was looks like some fuse or relay problem but i check all of them they are just fine.please help me with that.Also my trunk openner doesn't work it was working before i didn't do anything unusuall but it stoped working.  

Answer
It may be a bad electrical connection. Try cleaning all the ground points and all the harness clips with electronics cleaner and see if that makes a difference. Also try cleaning the bulb sockets. If it still doesn't work get back to me and we will try something else.



Regards,

John