I'd have thought (in standard form) the PGM did too much to be bypassed as the pulse generator and both coils run to it. Something needs to take the pulse and tell the coil when to fire, that something is the PGM.

But if one you've got works on another bike it's not the problem anyway and if there's no power to the coils at all something is amiss.

Hopefully someone wil correct me if needs be as the next bit about coils is not NSR specific;

The coil gets power from somewhere (hopefully a good battery, mine for instance will not start on the kickstart if the battery is flat, it needs a damn good bump to get the stator chucking some power out first), transforms it and stores it until the CDI/distributor/PGM or whatever sends the signal to send the power down the HT lead to the plug which sparks.

So looking at the '21 wiring diagram, if the battery is good and there's no power at the gn/br (green/brown?) wires into the coil it's not going to start, that wire runs back to the white plug on the PGM so see if there's any power coming out of it there.
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