Hey Jim,

I tried searching around for some clues on Glow Plugs..got a lot of information, but none that seemed to address my specific concern:

I inherited the 84 300SD from my dad, who said about 2 years ago, the glow plugs got changed. My plugs indicator light works about 1 out of 10 tries, other than that, its just been really grumpy on cranking and I don't know why.

Are fuses tied to glowplugs in some way? I think I'm long overdue for changing out the fuses, so I'm interested in whether or not this will help the plugs.

Again, sorry if this question has already been addressed someplace else on this board. I DID try searching!