1972 Overlander: Unknown Exterior Electrical Things

[jayness2020]

Just bought a 1972 Overlander. I was hoping someone could identify these for me:

The round, black mounting thing here; located on driver's side front (there is not one on the passenger side):



The thing on the right seems to be where you would connect power to the trailer, but it's not a typical shore power "receptacle". These are located on the driver's side, near the rear, near the bottom:



The thing on the right is a tiny light, but for what, I don't know. These are located on the driver's side, near the rear:



Any help in identifying these would be appreciated. Thanks!

[TG Twinkie]

The tiny light is a reverse polarity light.
IMHO you should disconnect it. It monitors the AC side of things which does not have a polarity. It will also interfer with GFCI breakers.

[moparjohn]

the first picture, the black circle is the radio antenna base, the last picture next to the polarity light is the fiber optic tail light monitor I believe, it allows you to see your bake lights are working from your tow vehicle, you can purchase an alumn. cover for it as the white poly has worn away. MPJ