annoying lights problem

[kikkegek]

alrighty,

got some investigation done today.

I opened up the right rear light! I immediately noticed a ground connection I had never seen before. IT is behind the rear lampunit and directly connected to the chassis. It was a bit loose and corroded gray. I then unscrewd it, cleaned it up, screwd it back in again and tightened fastly. After that the problem with my lights was gone.

I then tried installing the same LED bulbs I use for me front flashers in the grill. (see pciture). In the front flashers they work fine, but they wont work in the rear.

well they do work, but not like in the front. In the front the front of the LEDS light up in one mode (DRL) and ALL (front and rear of the bulb) light up in the other mode (flasher).

I already installed a special flasher module for LEDs.

Can anybody please explain to me how the wiring of these brake/flash/night lights work?

there seems to be a strangely shared ground? please explain?