I, too, have cigarette lighters (accessory outlets) in my + earth TRs.
I make a simple bracket out of masonite and mount them discreetly
well up in the drivers side footwell.
Mine are fused with a separate fuse which I think is a very good thing
to do, especially in light of the possibilty of a short to ground if a
metal-bodied accessory contacts the car.
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