What Mexicowanderer stated is why I don't like Ravelco or other third party ignition disable devices. A kill switch, if spliced in and soldered in right, with head-shrink tubing to ensure oxygen stays out, will add a low failure risk. However, it might be better to just pull the starter relay, so nothing that is running is affected.
I might go down that road. I have seen some modified starter relays that use remote controls like the Cyclops TAM. It won't stop a dedicated thief, but it will stop the tweaker who knows how to use a screwdriver in an ignition switch. Plus, it doesn't require cutting and splicing.
Removing the battery is an answer, but the person I offered to help with has back problems, so it isn't an option.
