Hi! I found something funny and I’m not sure if it’s so normal. I have the turn signals on my C1500 under the headlights, which are still light (yellow) at the same time. These are yellow double filament bulbs. Laterally I have another light bulb in the side marker lights. I now turn on the stand light, the turn signals yellow and this side marker light also light. As far as normal. If I have NO light (also no stand light) and then I set the turn signal ze, the double filament bulbs flash in the turn signals and the bulb of the side marker light LIKE TIME. As far as is normal. Now the abnormal: When I have a stand light and then set the turn signal, the double filament bulbs and the light bulb flash in the side marker lights ABWISSELND. So only naturally on the side to which I have set the turn signal, but just alternately. How does that come about???? Greeting, Luke.