Got a puma 210 that i have just changed rear top spots to led. Since doing this i have realised i have 6v going to them as soon as sidelights come on as the leds come on half brightness. Im guessing this was a fault before that i didnt notice with the old spots. Not touched any wires other than the positive and negative going to spots. Numberplate lights come on but goes out if i disconnect the 2 spots (again presume this happened before but didnt notice) spots still come half on with plug disconnected from cab light controller. Any ideas? Numberplate lights dont have any screws how do you get into them. Thanks