Ok, here are some values I got: As per FrankR's direction,
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Key switch off - pull the 2-wire connector plug to the coil (not the high voltage lead to the distributor). Set your test meter to "ohms" (lowest scale) and check the primary resistance across the 2 terminals - it should be between 0.72 and 0.88 ohms.

My reading was 1 ohm.
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Now set the meter scale to the highest range. Remove the high voltage lead to the distributor and check the secondary coil resistance between the high voltage terminal and the lower (the vertical blade terminal) of the 2 previously tested terminals - it should read between 14.5K and 19.5K ohms (K=1,000).

I got 12K ohms.
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The power transistor is the black, flat contraption mounted next to the coil on the coil bracket. Remove the 3-wire connector. As you look at the 3 electrical connections, mentally number them 1,2,3 from left to right.... they have letter designations on the topside of the unit, but my truck isn't here right now and I can't give you the designations that way - so -
With your test meter set on "ohms", check between terminal 2 (middle) and terminal 3 (right).... there should be no continuity (high reading in ohms).

Doing this test exactly as Frank suggested, my reading was 694 ohms.
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Connect the negative (-) side of a 1.5v flashlight battery to terminal 2 (middle terminal) and the battery positive (+) to terminal 1 of the power transistor (you'll need some small alligator clips) - Now there should be continuity (zero ohms) between terminal 2 and terminal 3.

I got no continuity.
If this test is valid for a '91, I may have a bad power transitor as Frank suggested. I will try to order one from dealer. Interestingly, I called a local junk yard just to see if by chance they had any Mitsubishi's in stock and the guy told me that an Egyptian guy buys them up the minute they get them in. Hmmm. <img src="/forums/images/graemlins/mrt.gif" alt="" /> I will also check on pricing of an ECM. My reading indicated it was toast.