| Richard--
My guess is the license plate lamps, under the lip of the trunk. Not something many check, and you didn't mention them in your list. Since these only come on w/ headlights and parking lights, it would make sense. The left/right parking lights do the same as the first "right" click of the headlight switch, just on one side or the other. If the side markers (low filament of the turn signals) come on with the first right click, then I would think you'd still have the left/right parking lights.
Interesting that the "bulb out" lamp only lights when you have headlights/parking lights-- I would have thought it would be on constantly with any bulb out. Perhaps it's a fault somewhere else.
Good luck!
Dave
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1990 560 SEL, 130K. Smoke silver (702) on Champignon ("mushroom") leather (265). Minor mods: Euro lights, blacked out grille, Pioneer headunit w/ Polk db650 rears/doors, db1000 fronts, rear "dummy" lights activated as brake lights, 35% bronze tints, 15" 8-hole wheels, keyless entry system. 1983 300SD, 106K. Orient Red (501) on Java MB tex (154). SOLD  |