Why not consider using Anderson Powepoles?
https://powerwerx.com/anderson-powerpole-connectors-30amp-unassembled
Its literally one of my absolute favorite electrical accessories. Reliable high amperage connections... I use them for my Viair pump connected directly to my bumper pigtails on the model that needs to be alligator clipped to a battery. No way a 12v cig socket could handle that amp load.
Just add a small discrete pigtail anywhere you want. I have them all over the truck, in the cab, in the back, one in the glove box to charge my handheld ham radio...
Its a much nicer solution than those 12v plugs... plus it has the added benefit of being pretty versatile. You can pretty much turn any cable into any cable.
I even added them to set of DMM leads... Now I can connect directly to the car, alligator clips on one end, probe on the other... You can easily add an accessory inline like those meters, or even make your own custom cables and accessories.
I use then on everything so I can quickly connect / disconnect a connection, or connect it to a different power source. Also pretty awesome when used with those inline meters as it takes seconds to make any electrical connection for testing, monitoring, or whatever.