kerry - I agree with you there. The alternator definitely wasn't charging like it should, but it was still somewhat functional, even with the tired old belts which are no doubt out of adjustment as well. I tested weeks ago and there was a positive difference between running and non.

Even at that, I don't believe a non-working alternator would cause wiring that was perfectly functional and all in order when I tested a few weeks ago would suddenly be causing a now legitimate short.

I'll post photos later tonight if anyone is confused about exactly what areas I'm talking about.

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1981 300SD - 283,000 KM's at purchase, 360k+ now. Engine replaced at 311k. 16" CLK wheels, w126 gen II cosmetic upgrades, late w126 leather interior. RIP. Parted and gone due to fire

1987 300SDL - 243K miles and counting. In winter hibernation!

2001 Ford F250 Super Duty "Platinum Edition" Lariat 4x4 7.3L turbo diesel, 295k+ miles, various mods for reliability and performance.

What were the voltage readings at the battery with engine off and engine running?

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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