Galvanized, very inexpensive at Farm & Ranch Store. Hauled with my F-350 several trips, using Honda 2000 suitcase generator for my 120VAC. But my wife's Expedition had 120 VAC available in cabin, OH! So much better than a generator. I plugged a power strip in with power on indicator LED Light, no more pulling over to check status on generator. Then ran 2 white 16ga extension cords out to trailer on passenger side, 2 Brown on driver side, each aerator had it's own 120 VAC power run. EZ Peazy to quickly troubleshoot. The thin 16gaq. extension cords went out rear hatch , weather stripping provides excellent scuff protection for cords.
Hope it makes sense, God bless You and Yours, James
