Finally managed to fit my Thinkware F770. Routed cables through the roof to back of car, one cable into tailgate for rear camera, one cable to rear power in boot. I first tried going down the A post but didn't like the fact that there is an air bag and it might hinder operation, and I couldn't get trim off. As I had to get one cable to back so 2 didn't make any difference. After I had fitted all I did notice that the DAB kept going in and out of signal, mostly out. I had already fitted ferrite rings to the power so was not sure what to do. I new that the interference was from leakage from a power cable but I had already covered that ? Then I realised that the rear camera must have power so I put ferrite rings on cable at front and rear of rear camera. Sorted, tested last night and never lost signal once.