From what I can tell, from parts sources, the ignition switch should be the same as mine. Here is a listing from a diagram that I have:
15R...........RED-GRN WARNING MODULE
15.............RED-BLK FUSE
50.............VIO-WHT NEUTRAL SAFETY & BACK-UP LT. SW.
15X...........RED-YEL FUSE
P30...........GRN-WHT LT. SW. CONN.
30.............RED LT. SW. CONN. & STARTER
30.............RED STARTER

Hopefully, that will help sort things out.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )