check the ACCURACY of your ohmmeter by holding the 2 test leads together, then take your resistance measurements. If for example your meter reads 0.3 ohms with the leads together and your plugs read 0.7, 0.8, 1.0, 1.2, 0.7, 12.5 then your actual values would be 0.4, 0.5, 0.7, 0.9, 0.4, 12.2. Check the REPEATABILITY of your meter by periodically retouching the leads. If you keep getting 0.3, 0.2, 0.4 that should be fine. If it's all over the place, then the meter won't tell you much. You can get a surprisingly decent digital meter these days for $20. It won't measure DC current over 10 amps, but hey, a $80 meter usually won't either.

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.