Hello, since yesterday I have been the owner of the said vehicle with 4 liters R6 BJ 1992. Unfortunately I have no manual. The following questions: – are the headrests adjustable? I have found electric seats but not a switch for the head, also the adjusting wheel on the seat side is only for the back. The passenger support looks out a little more than with the driver. Have it tried with a lot of power, or do I need more? – It is the standard radio installed. The red standby LED flashes, u And when the light is switched on, the buttons around the controller also light up, so power is there. However, it cannot be switched on. Is this connected to the rotary knob? Radio broken? – Where are the fuses? I found a “Fuse Circuit” already in the center console. – Which oil do you drive at 4.0?