Is a CFX 750 monitor capable of accepting a height switch message?  Running a CFX 750 with a planter and want to be able to have the mapping part triggered by a height switch installed on planter.  If it can, do I have to switch the recording source to an external source or is there any different setup within the monitor to get that reading from the height switch.  Also where do I tie the height switch cable into the CFX 750 cabling?  Is there a 2 pin connection or something already on the CFX harness where I can tee into or where do I need to go with the harness?  Thanks for your advice.