The inexpensive Sears meter I got will not read if the black lead is grounded. Don't ask me why, but just putting the red lead in #3 and leaving the black on swinging works fine.

I'm probably not smart enough to figure this out, but the car runs great.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!