Hello, the following facts: Yesterday I stood in the traffic jam, and of course the light, the heating and the radio (no amplifiers or similar) were there. After about 10 minutes suddenly the light began to “wag” – once weaker and stronger, also the lighting in the cockpit. Always in the same rhythm. When the traffic jam broke up and I was on the road again at around 100 km/h, the haunting stopped again? Can anyone tell me what that could be ?