Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Headlights dim and radio cuts out when brakes are applied › Headlights dim and radio cuts out when brakes are applied January 31, 2020 at 2:24 am #895958 Richard KirshyParticipant My first thought would be to look for a short in the wiring of the set of bulbs that is still causing your issue. The relay you hear clicking may be for the the brakes or shift release.