Hello. Maybe someone can help. A speci from me has fetched a removable AHK for his Mazda CX3 with according to the selection list vehicle the suitable E-set from Brink. The hardware itself was not an act, where it has now failed on the electrics. All cables in the can clamped, as in the description and also twice controlled even with multimeter measured. Mass is also connected with the beige cable set. Problem we have as soon as e in the rear bicycle carrier is connected to the can, there is even nothing on the carrier. The flasher relay ticks in the car, so that the turn signals flash faster at the front than at the rear but no lamps shine on the carrier. A cable should also be branched off for lighting NSL but this then did not work any more, as described in the description. Cable again clamped on series. Since front of the PDC control unit was also occupied by the specification of the place to pin (es g ibt da 3 Versions) we have taken the 1st version since 2 and 3 of the said pins were already occupied and that was then also in the trunk, that would be for the reverse gear. Cable set in itself plug & play together. Are a little helpless, because a lot of wrong can not be done normally. Had had recently also had a driver carrier retrofitted without problems electr. , like mechn. Even with another trailer times tried at the car not much more. He had to have the car completely and he started it all again. Maybe someone knows advice or had had something like that already.