The system has two power sources, 1 , 40amp fuse ( main power for the box, mine was next to the pump/ resivoir, inline , had to replace due to corrosion) and a feed from the ACC. side of the ignition switch in the main chassis fuse box. The control box has a bunch of 10 amp fuses, for the indiviual solinoids.
If the push button control panel won't light up you need to check the main & Acc fuses first, then the connector at the control from the panel, so you still need to find it.