LED Autolamp 135ARM Slim Combination Lamp, 12/24 V

I had major problems with getting these to work on a trailer when fitted to a new car with Cambus sensing. I fiitted the lamps to the trailer, did all the wiring, connected it to the car and got weird results - flashing tail lights, double speed indicators, etc. Basically the bulbs do not draw enough power for the cars sensing system to think they are working however, because the system knows something is there it goes into error mode. The only solution would be to fit a load resistor on each bulb on each side at £7 each, i.e. more expensive than the light units and the resistors have to mounter on metal and reach very high temperatures.Result - fit bulb units - and because the wiring has been cut to fit - NO refund on the LED units - Please, check your car system before you buy - they look great but may not work.