It's located inside the glow plug relay. You have to remove the black plastic cover from the relay to see/access the fuse. The relay is located on the driver side wheel housing. Trace the wiring backward from the glowplugs to positively identify it.

I *think* the dash light does not illuminate if the 80 amp fuse is blown. I had this happen on my '87 several years ago. I do remember it was an absolute bear to start without glowplugs. Temp was in the middle 40s fareheit and I could just barely get the car cranked up after several minutes of on-again off-again cranking. Made a most impressive smoke cloud too. If it had been a few degrees cooler I don't think starting would have been an option.

Does yours fire up right away, but then idle rough and smoke a bit? That's rather normal for these cars - the glow plugs shut off when you release the key from the 'start' position. Try giving it an extra dose of preglow. Just wait an extra 10 seconds after the dash light goes out - the glow plugs stay on even though the car has given you the 'ready to start' signal.

- JimY