boot contact switch which is part of boot lock but can be removed clean contacts on it shud do the trick mate . . dont fit supressor it plays havoc wit the charging system on fords the use a different charging system linked to the ecu as for static shock check and see if your tyres one or all ar cheap remoulds if not just fit static strip to rear axel as apposed to rear bumper lokks better ha .there only about 3 quid .as for windscreen its a new one im afraid the silly scratch removing kits dont work trust me