To cut a long story short, the other day my rear left light was showing up on the DIS. So i changed that, then all of a sudden my rear reversing light went this was weird because it had only recently been changed! Also sometimes the DIS tells me the left reversing light is out when it isnt! And just now when i opened my cluster i find my P21 bulb has decided to come apart i.e. the metal has detached from the bulb! Now i must be doing something wrong here... Could someone possible give me the models/numbers of bulbs for the rear left cluster? Because it could be that the wrong bulbs were in there... Also forgot to add the rear left light i put in on Sunday has always gone on me again!