Deskcnc driver wiring

Hi, I have 2 drivers that were working ok but I added a third larger
driver and had to put them all in a larger enclosure. After
lengthening and reconnecting everything, nothing works. Does anyone
have a wiring diagram for the Sv-500 (
http://www.cadcamcadcam.com/index.asp?PageAction=VIEWPROD&ProdID=11 )
mainly with regard to Gnd & Ebl connections ?
Thanks, Glen