Hi all! I just bought a 1979 300SD.It has a 617.950eng. It has the wireing to the ignition switch all cut and just hanging there.The car can be started by touching two wires. I need a diagram to tell me what wires go to what plug in the switch barrel. The numbers on the barrel plug are P,30,50,R,P30,30,15,15. I did a search of 16 pages but couldnt find one for this year.Thank You