Could rig up a switch somewhere inside the car near the driver's seat pretty easily. I had an old motorcycle with some kind of electrical issue that would drain

Could rig up a switch somewhere inside the car near the driver's seat pretty easily. I had an old motorcycle with some kind of electrical issue that would drain the battery if I left it off for more than a day at a time. But instead of spending days and weeks chasing it down, I spent maybe $30 on a battery cover with a little hidden flip switch. It was originally designed for turning on (illegal in my state)under lights, but I modified it slightly and had the switch connected to the ground terminal instead, so whenever I got off the bike I'd flip the switch and boom, problem solved, no more dead bike.