I agree 100% on the secret switch. I had it installed back in a 90s car, pre-electronics complication, and it always gave me the piece of mind. However, it does not stop some robbers from lifting the car and getting it away if left overnight...

I had mine under the passenger seat. When ver I had a new person on board, I would heavy bass music on board 🤣

No rust is gold dust. You are ready to go a long way.