What do I need to install an EZ guide 500 in a tractor, and get GPS signal from an Ag Leader GPS receiver?

I have a fairly solid grasp of installing Ag Leader systems in a wide variety of machines, but older stuff like this EZ guide stuff actually predates my experience with this sort of equipment.

I have a customer a fair distance away, and need to plan everything I will need for this install.  His setup is as follows:

Present tractor equipment:
Ag Leader Insight display, with Seed Command.
EZ Guide 500
Unknown GPS receiver, but whatever it is, it is known that both systems operate off the same receiver.

New tractor to be installed:
Kinze Vision display (functionally identical to Insight), with Seed Command
An Ag Leader GPS receiver (presumably a GPS1500)

I have no questions about installing the Ag Leader components in the new tractor, I know that stuff inside out and backwards.  My questions are about the EZ Guide.  All the Ag Leader/Kinze/Seed Command required parts are new to that tractor, none of them are coming from the other machine.  What is coming from the other machine is the EZ Guide 500.

What cables will I need for the EZ Guide in the second tractor, including what will be necessary to get a GPS signal from the Ag Leader receiver?  The customer wants to move only the EZ Guide from tractor to tractor.  The Ag Leader displays are not moving, and the GPS receivers are not moving.  Also, how does an EZ Guide mount?  Does it use RAM balls in the same manner as Ag Leader Displays?

Thanks!