Nope, its all advice and I'll take what I can get. You are quite right Clive there was a lack of info.

The BOB is this one:
http://www.ebay.co.uk/itm/5-Axis-MAC...-/121924104910
If I have read things correctly on the forum - the Start wires that go through the spindle relay output just make the connection for the trigger which is enabled in mach3 on output 1 and pin 17