If you are meaning just to test the relay then yes, easiest way for the moment would be enable the coolant on Ports and Pins, Spindle Setup and just enter an output number you are not using. Then go to Ports and Pins Output page and enable the output you chose and enter the pin and port numbers for the connection on your BOB. Once done you can toggle the coolant button and the relay should switch on/off as you press the button.
Hood