I used one of the outputs on my Alpine alarm to activate the factory alarm, so I get starter and fuel pump interupt, plus both sirens going at once if it is set off.

I used the old factor alarm wiring for an anti-hijack feature with an adjustable time-delay.

It's all reversible, too.

Olivier

Crimony!!!!

I would love to get rid of my factory installed locking system. PO installed an alarm which also has door lock remote, and it has been causing havoc.

So now I have a $300 alarm add on that is not used, and tempermental locking system that does what it wants.