I took the whole dial mechanism out of my peugeot 306 to fit white dials. After fitting it back the right arrow dosent flash when turing right. I have tried changing the bulb and making sure the contacts are ok. The external lights are ok but there is no visual indication on the dash when turing right. Will this fail the MOT ? Any there any other things to try or do i just buy a whole new unit before the next MOT. Thanks Mark