Help!! On my UK spec car there are two electrical plugs on the fuel filter. One goes to the bottom, which is easy to unplug. The other is a white plastic plug and I cannot work out how to unplug it. On the under side of the plug is an orange slider, but whether I push it fully in, or slide it fully out, makes no difference to the plug. It just won't pull out. Presumably, in one position the plug is locked, but it seems stuck in either position.
