I've got a 1981 Mercedes 300d, wiring was hacked out beyond repair and gone, I havemost everything retired but can't seem to figure out how to wire the key switch, the back of the key switch pigtail has 7 wires I'm trying to figure out where they go, idc about lights and what not just need to know what wires to hook up where so I can start, glow, run, shutoff. I've got the 7 wires 2 red that are hooked together, red with green stripe, red with black or dark blue stripe, red with yellow stripe, violet, and green with white stripe. I have researched in places I thought I could find schematics on the web with no avail, violet wire seems to me to have something to do with glow plugs? Idk about the rest... Help please!