Rover 220 coupe rear light problem

Faulty bulbs but look OK - test with meter or a battery Wrong bulbs - Check with handbook Correct bulbs wrongly fitted - ditto

I would firstly ensure you have a good working bulb for each position ( rev & side ) and then try it in each position, one at a time, with the others removed. I suspect this will identify mulitiple faults, which are adding up to be confusing.

Sorry, can't do much about the weather. Just wrap up warm. :-) E-mail address, hopefully self-explanatory Andy

In message , Andy Pandy writes

Another possibility; when my driver's side tail light and number plate lights when, I discovered the loom - which runs through the tailgate - had frayed.

Other symptoms included fuse blowing, so I guess that the upstream fuse for the tail plate light is shared with the tail lights.

HTH.