I have noticed that the brake light bulbs lose contact with the clusters, and I need to re seat the bulbs. Its a pain in the @rse, I tell you. And the rear lights are fused through the parking light fuses, it took me a while to realise that the night before my MOT, I was really frustrated after about a half hour of swapping components around. What was worse was that the local kids were doing a cycling proficiency test right past my car, so I presented an unexpected door flying open hazard to them. Fair play, no-one fell off!