Posted 7/5/2018 08:36 (#6851614 - in reply to #6851367) Subject: RE: Challenger MT 865C Trimble CFX-750 heading spinning
jamestown north dakota
I may be out in left field here. Does this model have the module under the roof top that the old system receiver was plugged into and received power from. Believe it is on the right hand side under the roof cap. Make sure it is disconnected.