cdog19

I just finished installing my kit and everything. I hooked up the battery again to get the fuel pressurized and check for leaks. Fuel pumps on, all electricity fine, no fuel leaks. Everything is ready to go, then i hit on the ignition, it cranks once, then dies, with absolutely no power anywhere. No radio, no lights, no fuel pump, nothing. The only thing i've done electronically was change to Hondata w/ a chipped OBDI, and a boomslang II to I harness. Keep in mind everything worked before it cranked once, please help here?

batteries fine btw