Issue with rear NS brake light. Will only work intermitently, occassionally goes off and then back on again after taking a corner (coincidence?).

Can't see any issue at the light unit itself, what could be causing this, where else can I look?

 

This is one of those tricky faults, now you see it ,now you don't.

The last time I had one like this the positive contact in the bulb holder had been bent slightly and so was making an intermittent contact. Other than that make sure that the negative contact, which actually holds the bulb in place, is not out of round. This could cause an intermittent contact on the earth (ground) side.

 

Bill. Thanks for the info. I will have a look this weekend to see if any of these suggestions will work.

 

OK the brake lights are all working fine and permanently now.

The brake light warning light on the dash is permanently on....