Joined the forum recently as I have an old Escort Solo (no other identifiers except SafetyPilot on the Serial # sticker). This is a cordless model, but I have decided to direct connect to power and need help on the power jack polarity. This isn't the newer phone jack style, but the older 'single small male probe with other contact around the periphery'. Sorry, there's probably a specific name, but I don't know it. Most of the time the small point is + and the outside is -, but I don't want to connect it backwards. I have switched 12VDC close to the rear view mirror/dome light assembly so that piece is solved. I also have a multimeter with which to check the voltages. Any help would be appreciated.