i jus got a 00 civic si and it came with a excalibur car alarm...when i got it my parking lights would flash when i locked and unlocked the car but it suddenly stopped doing...HELP!!!

 

Get the model number and look up the installation manual online.

There is a wire on the alarm for flashing the parking lights. Find out the color and locate the wire. Make sure there isn't a disconnect there.

It could also be an option on the alarm. Read the manual and see if there is. You will likely need the valet switch to program it back if that is the case.

GL OP