Good work. For people wondering, the reason why the light wasn't working was that the 'test system' which tells the light to go out if there is a glowplug problem, compares the current draw on plug #1 with the draw on the rest. With the loose wire, there was a difference in draw making the glowlight go out.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13