So apparently on the 2013 FX the batteries are unique as compared to the 2014+ models. I changed the anderson plug from the black keyed one on the 2013 to a 2014+ grey keyed one and installed the 2014 battery. Well turns out the Zero did their Zero thing with changing everything every year and so the pinout on the small pins are different. I originally assumed they just keyed them differently because the CAN bus messages were incompatible. I installed the 2014 battery in the bike and as soon as it plugged in the dash turned on but there was no sound from the contactors when I turned on the key switch. Turns out where the CAN bus high line is tied is on pin 1 on the 2013 FX models, the MBB power line is on the 2014+. So unfortunately in my stupidity after reinstalling the old battery nothing happens. So now I get to figure out how much stuff was destroyed. I have a IXXAT dongle and the DVT software so I need to make a harness to standalone test the SEVCON controller. Is there a good way to test the MBB? I've looked at the unofficial manual and it seems that a lot of the diagnostics only applies to the 2014+ models.