If this is a G series machine here are some checks you can make:
1. Disconnect harness from aux soleniod, turn on key, check pin A, wire 4480 for voltage.
If no voltage, could be a controller problem
if voltage, do step 2.
2. If 12 volts found in step 1, turn off key, disconnect Bobcat controller, J4 connector
Check continuity between J4, pin J3, wire 4480, and all other pins in J4
If continuity, replace or repair harness
If no continuity, system is okay, could be a problem with the controller if alarm remains on.
Good luck