Which work but, not always reliably. The plugs can sometimes easily disconnect or just make a poor contact. Normally it's not a big problem but, as has happened if my Engel Fridge Freezer gets disconnected and I don't notice it it can mean a few spoiled meals or warm beers. Looking around for some better connectors to use for some electrical projects. I came upon these Anderson Powerpole Connectors
They are used by a lot of Ham Radio Operators for connecting power to their radio setups. They make for quick and easy connections. The contacts wipe across each other as you connect and disconnect them which helps keep the contacts clean . Which helps make low resistance connections and means less power is wasted and connections more reliable. Which is not always the case with the cigarette lighter type sockets.
Anderson makes various Power Pole connector models including connectors that have ratings into several hundred amps. In fact BIANKA already had several larger 75 Amp Anderson Power Pole connectors used in connecting the solar panels, wind generator and battery charger into the electric propulsion controller box:
However the ones I'm using most on board for my projects are the three lowest amperage connectors they make:
All three of these connectors fit the same Power Pole housing but, accommodate different gauge of wire sizes. All three can be interconnected with each other too.
After crimping the wires into the connector you simply insert them into the plastic housing from the rear:
until it snaps over a metal locking tab on the inside front the case making for a secure connection that won't pull out:
Another nice thing about the Anderson Connectors is you can slide them together to make nice modular power plugs. You can insert a small pin in the hole between the connectors:
Another nice thing about Anderson Power Pole connectors is that the cases are available in a variety of colors:
Another nice thing about Anderson connectors is that you can make up mult cables easily when you need them to power multiple electric devices from one outlet:
The above mult was made using three 15 amp connectors (note they have not been inserted into their proper cases yet) on the left and a 30 amp connector on the right already inserted into a case. These mults are much less bulky than trying to use one of these 12 volt cigarette type of mults.