depending how many wires you need, get some 7-way trailer wire and plug ends. I wired my rear plow up that way and then used quick connect plugs like these for the power/ground cables. Similar setup might work for you. The 7-way trailer wire was like $2.60/foot and the connectors were a couple bucks, I priced it out and it was well under half the cost of getting an OEM truck side harness. Again, thats for a rear plow, pretty simple up and down but you might be able to rig something up I don't know much about salters.