The other day i had a faulty bulb and wiggling the wires and all the rear stop and tail lights went out.so i thought i have blown a fuse but i havnt.i must say i still have all rear brake lights in all four working just not the rear side tail lights.ive checked all the fuses under the footwell near pedals.is there anymore fuses i can check else were.or also could have i blown the little black box thing that sits in the rear os light unit ? But when i unpluged that i lossed my brake lights aswell.is there two circets in there.and if thats the case has anyone got a spare please?

Or have i missed a fuse somwere else?

The rear light sensor indeed has two circuits, if there is a break in the track on the board or has water ingress, the side lights would be out but the brake lights will still work, so i would take the little black box apart to inspect the circuitry, you will see instantly if there is corrosion or a burnt track or compnent on the board. Usually if you cant fix yourself, get a replacement.

 

Before you get a new one and plug it in, do check the plugs and wires to the lights to make sure you dont have a short.

Well i took the cover of the little black box but cant find anything wrong to look at. That doesnt mean theres nothing wrong with it thou, there loads of tiny resistors and things that could have burnt out.so if anyone got one of these little black boxes of trix spare that sit on your offside rear tail light unit they have spare then i can get an mot.well that is as soon as my brothers garage replaces all the brake lines down the car.cheers.