Good Evening,

The rear electric windows on my 1986 190E 2.0L are not working. I don't think its a problem with the motors as niether work, and I can't identify any power to the switches (rear doors & front console). It could be the relay? I only have 2 relays in the fuse box - R1 & R4. Is there a relay missing? Any suggestions on what the problem might be and how many relays should be there would be much appreciated.