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2003 teakettle 750 spark only on two cylinders


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Trying to finish up the slabbie with a teapot 750 engine and we had it running great on the bench, finished up some other parts of the bike and now only getting spark to one coil. Swap the leads and the spark switches. Checked continuity from the ecu to the coils and both leads are good, as are the orange/white power lines. Any way to check the ecu before ordering up another? Cheers

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Edited by Captain Chaos
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Ok, this is driving us crazy. Slabbie 750 with an 03 teakettle 750 engine and harness. It’ll get derestricted later. It was running before, now we only get spark from one coil. Continuity tests good for the wires, swapped in a new ecu tonight and still the same thing. Multiple coils, and the side with the white single wire works fine, the side with the black/yellow signal wire has no spark. 
 

Sorry that it’s a teakettle and nothing cool, but we’re trying to finish this to get my friend off his old shitty Yamaha, so it’s for a good cause. 

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