Onan B43M in a Gehl HL360 skid steer. Same engine as in many older JD rider tractors. No spark or weak spark. Fires the coil at the same time for both cyls. Machine ran 10 years ago, but had a governor failure. We have fuel, compression. Points are new, are gapped to spec, and close at the appropriate times. Have to have the lights off, someone leaning on the plug with a screwdriver to ground to see a weak orange spark. The current setup has the condenser on the GROUND side of the coil. Coils are NLA or on national backorder for this engine. NOS is $214. The Onan book says the secondary coil resistance across the pins for the plug wires is 12-15K I have like, 34k ohms. The condenser is unknown but looks new. Aftermarket (Chinese) coils include a different style of condenser, and the coils have a higher ohm reading (on par with what I have), which if you go on the Onan parts website, say these style condensers go on the positive side of the coil. https://onanparts.com/index.php?mai...id=180&zenid=2e485b4c797899f7e1d0d0b3b830f5e5 I have an aftermarket coil on order but despite ebay saying I'd have it today, its coming from a California Chinaman hellhole and won't be here till next week. Need this machine for a job this weekend, frustrated and stumped and pretty much out of funds to fix it.