Thanks Jim, I've had a trawl through and you may be correct and even if I were to get lucky on the IVA there's always the subsequent MOT's so it's back to wing mounted. I'm currently experimenting with moulding a spacer out of black silicon sealer, trouble is the garage is so cold that it's taking an age to go off. Ian, re the connectors thanks for the offer, it's just 2 pins that I need, is that something you can assist with? Regards, John.