So My bike turns over but no start. Popped up a code 39 CAN bus no info. I checked the wiring continuity, all good. Tested the ECM and speedo cluster prongs, within resistance. The gear indicator shows N when in neutral but a - in 1st through 6th. Ive done all the checks according to the service manual and am my wits end. Its has the correct battery in it. Maybe a bad ground? gear indicator switch? Thanks.

CAN are just two wires from dash to ECU. Pg. 3-39

Checking from wire end to wire end, meaning from dash to J-box to ECU and find no wire break, or loose male/female ends, right?

Those two wires have 4 point that tie into the flow. All is clear, it points to the brick.