willysmjeeps.com

Reading a tip Saturn Surplus may be going out of business.

They have been selling these for a while:

https://www.ebay.com/itm/WIRE-HARNESS-W ... :rk:1:pf:0

Note the connector is the trailer side connector, not the one on the back of
the jeep.

The Link you provided isn't Saturn surplus, that's Frontline military vehicles.

Oops, my bad.

Good news is you can still get these harnesses!