tre5
+1y
I suggest getting one more dump. You'll be much happier with a 2 pump 4 dump setup. But here goes...
Front switch is simple. Use a 3 prong (looking at the back of the switch), switch power (24v) in the middle, top prong to the dump, bottom prong to the solenoids (3 solenoids to each pump).
Rear switch needs to be a 6 prong, switch power to both middle prongs, two top prongs go to the two dumps, only one bottom prong used goes to the solenoids (again 3 solenoids per pump).
Pancake switch is a 12 prong, switch power to all 4 middle prongs, use 3 top prongs and go to each dump, use 2 bottom prongs to each set of solenoids.
Your switch power needs to go to 24 volts. If you're running accumax solenoids the wire will go on the terminal labeled "S".
If you decide to run a 4th dump, the front switch would have to be a 6 prong and would be wired just like the rear switch.
Let me know if you need more help.