Near Intersection of I-35 & I-90 Southern Mn. | Ok, you are using an Auxiliary Input Module. From your first post, I wasn't sure if you were using one or attempting to run a system with just the Liquid Product Control Module. You are aware that a switch box arrangement of one type or the other is needed. I thought that possibly you had just acquired a loose Liquid Product Control Module on auction or online and weren't aware that a switch box/module is needed for Input.
So as I understand your arrangement, you have rewired the output from the original Hagie switches which used to run the spray valves directly to become inputs to the Auxiliary Input Module and have wired the outputs from the Liquid Product Control Module to the spray valves. If so, that is correct.
The output from the Master and Section switches then become inputs or indicators to the the system. They should not go anywhere else. Their new purpose in life is just to convey your intentions as to when a section should be OFF. The Liquid Product Control Module is in complete control of when the spray sections are turned ON or OFF. Nothing else should have the ability to cycle those valves ON or a conflict could arise.
Did you use the special Ag Leader wiring harness that includes the black diode block between your original Hagie switches and the Auxiliary Input Module? This wiring harness uses a pin called Switch Detect and is necessary for proper operation.
When I made my first homemade switch box to work with an Auxiliary Input Module, it sort of worked but had delays at times. The reason was that I didn't understand the purpose and the need for the Switch Detect wire. It must be used or there may be as much as a 15 second delay between flipping the Master or Section switch ON and then the system responding to it. Sometimes, the response is immediate, other times, there may be unacceptable delays.
The solution is to make use of the Switch Detect pin in the Auxiliary Input Module. I believe I understand how it works but have difficulty explaining it to others. Believe me, it is necessary. Using the special Ag Leader input wiring harness with the black diode block in it is one solution. I suggest you use one of these. It will plug into the Auxiliary Input Module and have "loose" wires to connect to the "out" terminals of your Hagie switches. It uses the switch detect wire to the black diode block to inform the system that you will be using simple external switches.
There are other methods beside this but attempting to explain their operation is usually futile. Seriously just get the external switch wiring harness from Ag Leader.
I'm not following your statement about connecting the wires that are hooked to the factory boom switches directly to control the section valves. If your Hagie boom switches are connected to the Auxiliary Input Module (they should be) and also to the valves (they shouldn't be), auto swath would not be able to shut Off sections for you since the switch could be keeping them ON. This might also back feed the Liquid Product Control Module which might damage it. The output from the Liquid Product Module must be the only method that a section valve could be turned ON to spray.
If you wish to open valves "manually" the proper way would be to choose MANUAL for the rate and shut off auto swath. Then the section switches will then be the deciding factor as to whether a section valve is ON or OFF.
Edited by tedbear 1/23/2026 07:20
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Hagie DTS 10, 2100, 284 ag leader conversion
