The difficulty is there were different versions with different values used. Also, it appears someone has been inside this unit previously due to the green laquer. Perhaps removal of the laquer may help with identification. MEK (methyl ethyl ketone) will clean it easily but VENTILATION is paramount.

There is a thread about repair of the Glow Plug Relay. It should be easily found with a search. I'm currently on a tablet and unable to use that feature. If you would like, I'll see if I can locate it later using my laptop.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )