My aunt gave me an 1989 Mercedes 300e, and she has no manuals. So at night i turn on my lights but i swear i cant find out how to get the damn instrument and controls lights on. No lights are coming on the: the dashlight, "PRND 3 L", the ac/heating controls aren't lighting up, the only light that lights up inside is the roof light. i checked the fuses and they all are fine. So is there any special way and thing to turn on the lights or is something wrong? I have no idea with cars.