I have a bucaneer elan (1994) with jokon wrap round lights.Having removed the lights they have all been bodged,wires have been soldered straight onto to the bulbs and all other nasties (how you change a bulb at the side of the road i give in)As all the conecters on the back are broke i have purchased two new units.My only concern is there is no seal between the unit and caravan so all the water and crud can go straight in.Should there be a seal if not is there something i could use