Fuel pump not priming but works on it's own

[dreygata]

Need some electrical advice. 2000 X1 Lightning. Accidentally let the battery die by leaving the parking light on in the garage for a few days. Battery wasn't able to be recovered, so I bought a new battery. Installed it, and now the fuel pump won't prime (ecm throws a 33, fuel pump short to ground). Fuses are fine, ignition relay is fine (tested with a multimeter), and the pump works when I give it 12V power directly, both at the pump contacts and it's connector (gray and brown w/yellow stripe wires if I'm remembering correctly). Bypassed the bank angle sensor to rule that out. Bike still cranks when I thumb the starter button. It seems like a circuit isn't closing somewhere but I have no idea at this point. Rode fine before I killed the original battery. I have access to the service manual, and I plan on bypassing the clutch and sidestand safety switch to rule those out.
Any thoughts?