[rickkellogg]

OK... Confirmed coil wiring and picked up a multimeter with an RPM setting. Also did something I should have done earlier, check the resistance of the coil primary and secondary. Based on the coil measurements, the coil appears to be bad (open secondary). I'll order a new one tonight, but just not thinking I'm that lucky. Seems like the coil should still get the fire signal from the DME whether the coil is bad or not. I hooked the multimeter up in RPM mode, attaching it to ground and the green wire on the coil, and I get nothing -- 0 RPM when cranking the engine. Just for grins I used the AC volt setting to monitor the output of the speed and reference sensor. I get a reading from both when the engine is cranked indicatinig (to me at least) that metal is passing close enough to the front of the sensor to generate a small voltage. Interesting that the speed sensor gave a significantly higher reading then the reference sensor. My guess would be that this is because it's generating a pulse at every tooth on the ring gear vice once per rotation for the reference sensor. I'll replace the coil this week and try again before hunting for another DME.