My 300cd started getting a little hard to fire up in the morning a few days ago. It would start, but run really rough and puff white diesel-smelling smoke. Seemed like it was mis-firing on a couple cylinders, but after for 15-30 seconds, it would smooth out and be just fine. On warm restarts there were no symptoms or issues.

I figured it was a couple of GPs gone bad, not a big deal, they're 2-1/2 years old and probably due for replacement anyway. THEN suddenly my GP "wait" light on the dash quit lighting up and the car won't start. Gets really close to starting, just won't quite get there.

I know how to check the GPs, that's easy, but here are my questions:

1) If ALL the GPs went bad, would the dash light quit coming on? Or will it still light up normally?
2) Where is the GP controller located?
3) I presume there is a fuse for the controller in the regular fuse panel?

W haven't had a chance to start troubleshooting it yet, so any up-front advice,and help that will speed up the process will be appreciated...

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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown