I've got the Tekonsha P3.. but if your camper has LED's you need to get a Trailer adapter module... because the car is European it has an in-built diagnostic system that will not recognise that a trailer fitted with LED lights is connected.. which is why they are flashing..
The LED Adaptor Module fixes this problem.. :)
See this link for what I am talking about..
http://www.linearelectronicdesign.com/

