I was wanting to disable my factory OEM security system for several reasons. Couldn't find anybody who had any success doing so until I came across an old post at justanswer.com. It said to unplug the security sensor for the hood latch (you can find it by looking on top of radiator for a small plug that has wires that trace up to the hood latch mechanism) and then put a jumper wire in the connector. Basically, this makes the computer think the hood is open (even when it is closed) and so it won't allow the security system to activate. I tried it and it worked. Wanted to post this here since a number of people have also mentioned wanting to disconnect the security system. Hope it helps.