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So I built a custom bobber a while back. Engine is a twin cam 96 from an 06 fxdbi, and I used a stock wiring harness on it. On the old one I got rid of the tssm. I Read on a Forum before if you do that you need to ground the TN/GN wire on the starter relay. I did that and I also decided to run a thundermax ecu. With that all being said the bike ran for a 2 ish years and I’d always have wiring issues because I used an old harness and it didn’t do the best. Now. I have decided to build a new harness. I just went off the schematics and wired it all together the exact same way it was before just cleaned up a birds nest of a mess. The bike cranks just fine and will run off of starter fluid if I spray it into the intake. I have an external fuel pump which is priming. I pulled my fuel injectors and the front one sprayed when I cranked it. And both spark plugs are sparking. I thought it may have been old fuel so I dumped it all out and put new stuff in but it still has the same issue This is the main schematic I used for everything
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Bike no start
