Horn and Headlight problem
 

My car recently started acting up out of no where. My headlights will stay retracted up and on and the horn will be constantly blowing. They won't go off until I disconnect the battery. The most I've touched the ignition/ alarm system is the click click click mod thing for a starting issue I've had with the car.
I've done the search, unfortunately people don't really post a follow up to resolved their problem or their problem magically went away.
Any suggestions or people that have experienced this before? thank you

Unplugged the CPU2 connector (white colored one) and problem seems to of resolved. As far as actually fixing the problem I assume I should be replacing the entire CPU2 unit?