I will share a old trick long before the time of good car alarms. Buy a old Van floor mounted high beam switch, mount it somewhere under the carpet or places that you only know it is, have it act as a power kill switch , one tap power is off to IGN, main whatever you choose, a second click and its live again. I would recommend if your not tech savvy call lemon Aid Jay as I am sure he has rigged these simple yet amazingly effective systems.