Hi, my os rear light has the 2 outer bulbs ( where it wraps round into rear panel) not coming on unless i tap lense , then  they do. Ive changed bulbs and bent contacts in a bit in bulb holders. Is it much of a job to remove interior boot panel to investigate loom. As its a taxi and council test coming up , need it sorted.  Many thanks

If it's two bulbs then check the earth