I have a 3700 kinze planter using and agleader insight with a pmm module for the monitor, the insight recognizes the pmm but won't detect seed sensors I have the pmm mounted back were the planter folds and run a cable to where the right hand valve block is and plugged into what should be the muxbus  harness, that appears to be where the harness goes to the front of the planter. Is this wrong is there a different place to plug in to get access to the muxbus to calibrate sensors. any help or ideas appreciated