Making a car difficult to steal

Thought about the negative wire off the coil going to ground through a relay, and I can see how to defeat that with a jumper just as easily as powering the ignition system and engaging the starter.

My conclusion is, if they get under the hood, it really doesn't matter what you do, it is easily defeatable. Yes 67Dart273, you were right, sorry I had to come to the conclusion on my own, too hard headed at times.

So, I think the only reasonable soultion that isn't overkill is to lock down the hood somehow and put in a starter kill switch of some type. It wont work on a thief with a tow truck, but it is at least some insurance against someone hot wiring the car and drive off. Not fullproof, but better than stock.

So, now to figure out how to lock the hood.