so, the starter is currently spinning anytime i connect the battery ground...even with the key "off".

if i connect the battery ground and then put my test light to the 3 terminals on the firewall that are shown in Diesel911's post above, i get current at all three terminals, even with the key "off."

does that mean it's definitely the ignition switch? (in the dash)?
or is it still up for debate?

__________________
-lee
'83 300CDT (286k)

former proud owner of:
'85 mercedes euro 300TD
'80 mercedes 300TD
'77 mercedes 280e
'80 mercedes euro 250
'82 mercedes euro 250