vfr800 vtec 2003

I recently took my bike to have an alarm fitted in the meantime the battery went down so it was removed and charged then replaced after which no way will it start.Can someone help.

Chris

 

does it crank over? if so, use a voltmeter to see what the volts drop to when you crank the engine over.

 

check ground is alarm always on??

 

sounds like the alarm is keeping you from starting it