[GMCTom]

Update
Everything is hooked up.
- Front light is OK
- High beam is OK
- Parking light (separate harness because of law here) is OK
- Tail light is OK
- Dome light is OK

- Turn signal front not OK
- Turn signal back not OK
- Brake light not OK

Tested the wires:

- Orange wire brake switch 12V
- White wire brake switch 12V if pedal is pushed
- White wire on the connector to the turn signal switch 12V if pedal is pushed
- White wire on the connector of the turn signal switch 12V if pedal is pushed
- Green wire on the turn signal switch 12V if pedal is pushed and switch in neutral position
- Other wires no voltage in neutral or left/right position

Maybe someone have an advice