Thanks, that is where the implement wire is.Behind the green plastic shroud behind the cab. Lower right corner. White (#209) and black(ground) on a male two pin weatherpack connector.All you have to do is connect a switch to the two wires and it controls the mapping function on the display.  Again thanks for the help.

I actually use a DPST rocker switch in the armrest to control (ie: in place of) the work switch on my 5000 flexi air drill.That way I can still put some seed down in damp sloughs with the drill up and the packers will press some of the seed down.The other side of the DPST rocker switch will control the mapping on the 2600 display.