I have a 3HP sub that I think has a bad timer box. I want to replace it with a newer digital box. I can find all the wires going to the valves and what I think turns on the pump but I'm not sure how the contactor and relay for the pump is supposed to work. There's an on/off switch on the panel and when I turn it on, I can see the contacts in the relay make/break but I'm not sure which wires power the coil for the contactor. I can press the white button on the contactor and the pump runs and I measure 8 amps on each of the 3 phases.