Diagram Of A Sailboat Diagram To Fit A Cigarette Lighter Socket In A Boat Working Off A Car Battery . How Do I Do It?

Diagram to fit a cigarette lighter socket in a boat working off a car battery . How do I do it? - diagram of a sailboat

I have a lighter in my boat, so you can connect a GPS navigation system Garmin 12th It's my way, with boats instead of battery 4 x AA batteries, I have (to replace only 24 hours) of power. I have the GPS system runs continuously as a backup. I need a simple plan to install cigarette lighter socket or how these simple instructions. Nothing too technical or lose me.