OK, and you get a click when you try to start?

then it's unlikely to be the NSS, that leaves, battery terminal condition, cable condition, or wiring at the starter... the battery is the most likely, as without some SERIOUS jumper cables, starting a diesel is impossible with a dead battery. pull the battery out, and take it to an auto parts store for testing. if it tests good, clean the terminals, and the cables for perfect connection. then try it again. next check the other ends of the cables, make sure they are clean and tight, last would be the starter itself, and no... it's NOT easy changing the starter on these cars... especially in the snow belt salt road area you live in... them bolts are big, tight and nearly impossible to get to...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!