Near Intersection of I-35 & I-90 Southern Mn. | Correct. With this switch, the ball valve trigger is either connected to its former location to the controller or to a constant 12V source. There is never any connection between the outer terminals. Either one connects to the center or the other.
The valve is controlled by the controller when the "new" switch on the sprayer or boom is flipped one way. Let's call that way - Normal. This would be for normal spraying. The controller controls the ball valve as before. The constant 12V to the other terminal of the switch has no effect. There is no danger of back feeding back to the controller.
When the "new" switch is flipped the other way, Let's call that - Test Position, the ball valve would open and stay open. The controller would not be able to control the ball valve. You would need to remember to turn the switch back to Normal after you have completed your test.
Your concern about back feeding is warranted but is not a problem. There are other wiring arrangements where using back feeding would actually be desirable but that gets a bit more complicated to explain here.
I made one for my Hagie STS-10 with an Ag Leader system that I controlled via my iPhone. This was somewhat similar to the screen shots I show above for the door openers.
It worked fine but I found that I really didn't use it much since we generally have the tender driver available and he can check the tips and use hand signals to the sprayer driver. I didn't bother to install it in my current STS-12.
Edited by tedbear 7/11/2024 07:37
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Sprayer boom remote
