The T-H Marine 12V Socket W/Battery Clip Extension is something you want to have. A 12 inch positive and negative wire that leads to your positive and negative battery clips. Other end is a 12 volt plug in to use whatever you need such as an aerator, cell phone charger etc.Features15 AMP Battery Clip extension with 12" WireInsulated 3" Corrosion Resistant Plated ClipsColor Coded Grips for Positive & Negative Identification