Hey folks -- still trying to sort out my 71 220D (build date 11/71). I can't find a
glow plug relay anywhere, though the wiring diagram in the Mercedes chassis
manual insists there is one. Someone here suggested that I look for a "fuse
on the firewall." I can't find either!

Anyway, I get no power to plugs at all with the start knob in the glow position.
Nor will the starter turn when the knob is pulled all the way out (starter tests
fine), so I assume the starter lockout switch may be bad or not completing the
circuit for whatever reason. Shift linkage IS loose, so I may not be getting all the
way into park.

Which leads me to wonder: will the plugs glow with the car in gear? Or does the
starter cutout effect them too?

Thanks in advance for any help; I'm pulling my hair out here!

Chris
cscmc1@eiu.edu