MEXICOWANDERER
Oct 12, 2016Explorer
Umbilical Battery Charging Socket & Plug Pair (good price)

http://www.ebay.com/itm/Male-Female-2-pole-82-1042-82-1041-2-Way-Trailer-Plug-trailer-power-plug-T4-/172281209565?hash=item281cc2a2dd:g:LGkAAOSwIgNXkm8-&vxp=mtr
Accepts up to a PAIR of 2 AWG cables. This is the way to get reasonable alternator battery charging power from a tow vehicle to trailer or pickup bed to camper batteries. Note the SPLIT plug prongs. Insert a small screwdriver or knife into slots and widen. Presto, super connection restored. Gob silicone or Goop onto exposed socket wire connections for corrosion protection and short proofing
This is the best price I have found for the pair. Free shipping and no tax makes this hard-to-beat.