I have a full blown tow bar with both grey and black connections. Never towed a caravan but have just been using it with my tow bar mounted bike rack.
As its dark early now i need to use a lighting board ... so coming to the reason for this post ... when i plug in this lighting board and either indicate or hazzords i get a beeping which is in time with the normal indicator clicking. (All indicators and braking lights are working on both the car and the lighting board)
It only bleeps when the light board is pluged in (Black socket)
Is this normal and if so why? If not why is it bleeping and is it bad?
THAnks hope that makes sense