No Z2 connector on MKS v1.3! HELP

Hi,
I ave a sunhokey Prusa i3 and have had to replace my MKS V1.1 for a V1.3 as I have broken it.
I am currently trying to wire it up and I have found that there is only one Z axis connector for the motor labelled Z, instead of Z1 and Z2 on the old v1.1 board.
I need to plug in 2 Z axis motors Z1 and Z2 and only one E axis motor, but on this new board there are 2 E axis motor connectors and only 1 Z axis connector and I need it to be other way round.
What can I do?

You need to plug both the Z axis motors into the one connector. The v1.1 would have had one driver driving both motors, but two connectors to allow you to plug them in. Most likely they were in parallel, which would have required double the vref.