ok, ive been having plans of making my own alarm and imobaliser
how it will work is simple
imobaliser, rig a swich into the circuit of the ignition so without the secret switch hiddned somewhere switched on, the car wont start
alarm, bonnect sensor riged to the switch and the horn, swich is open circuit triggers the horn makes loud noise, people who are trying to rip off your performance parts run away
probly make it 2 switches as it will be easyer
and a nice blinking red light for a bit more deterance
what you all think, anyone done this before