CHANGE OUT ALARM SYSTEM

What car
what year,
what model and sub model
is alarm factory or aftermarket,
only these fact lead to answers.
or if in USA< are you?
get the FSM and read that
or login to alldata.com , its there,covers all usa cars. read it.
or post the facts above. nobody can guess.

why not post symtoms.?
or state the problem. so we have CONTEXT.
helping blind is near impossible