seed boxes also the central fill hoppers have greater capacity than the seed boxes which reduces the number of fill iterations that must be taken when planting simply mounting a central bulk fill assembly to a stack fold planter such as planter 12 can create stability issues especially when the stack fold planter is in the transport position in this regard the present invention provides a mechanism for raising the bulk fill assembly 30 when the stack fold planter 10 is in the folded transport position raising the bulk assembly 30 provides greater stability during transport as well provides increased clearance between the bulk fill assembly 30 and the roadway turning now to fig5 the present invention provides a communications apparatus 94 for use with a prime mover equipped with iso 11783 technology the communications apparatus 94 includes datalink 96 that communicatively links an implement electronic control unit ecu 98 with electronics 100 of the prime mover 14 the datalink 96 may be a wireless connection or as shown in fig5 a wired communication consisting a connector 102 tethered by cable 104 to the electronics 100 and a receiver 106 tethered by cable 108 to ecu 98 in a preferred embodiment the connector 102 and the receiver 106 are iso 11783 components that permit the transfer of data between the prime mover electronics 100 and the ecu 98 thus it will be appreciated that the datalink 96 provides an isobus connection between the prime mover 14 and the stack fold implement 12 the isobus connection enables the transmission of various data between the stack fold implement 12 and prime mover 14 one type of data is hitch position information the prime mover 14 has a hitch position sensor 110 that provides feedback to the electronics.