Bob,

Used a standard oscope, nothing auto-specific. My inductive pickup consisted of a couple of coils of 20ga wire wrapped around each plug wire and terminated to about 6 ft of 50 ohm coax. Had to experiment a little with the wire to get enough coupling to be able to see anything, and not so much I saturated the front end of the scope.

It was crude at best, which is why I really hesitated to draw any conclusions from what I saw. Measurements were not very repeatable.

__________________
Gary Thompson
Georgetown, TX
1995 E320
1984 300D