Not trying to confuse anybody sorry
I have control harness26346 plus I have adapter 21792.
My problem that I can't rap my head around is the 3 red wires an black wire that are crossing from harness 26345 which I know that has to be changed out for the vplow controller harness into my light harness.as shown in 1st.picture.that is my dilemma.
So my question is what you do about the three red wires.thanks for any help
Those red wires will go to the 29047 adapter that would should already have if you have a 3 port module and the 26345 now.
You are going to remove the 26345 entirely and the 26346 is going to replace it. It'll hook up exactly the same way the 26345 does now. The only differences between the two harnesses are the # of pins in the grill connector and the style of connector inside the cab.