Apologies for not introducing myself first, but I need some advice before getting stuck in as I am VERY wary of anything electrical on these things. In a nutshell, the rear light cluster and front sidelight (the tiny bulb) are all VERY dim, glowing and that's about it. I've changed bulbs to no avail, I've cleaned the connector block at the back, nothing, if I wiggle the block, the rear bottom sidelight goes out and the side/brake brightens. It looks to me like an earth issue as it's too weird to be anything else. Sooo, question is, is there an earth point on the car that gets corroded or maybe a common issue (and easy fix) for these? Any help appreciated.