Near Intersection of I-35 & I-90 Southern Mn. | Not sure of the details in your situation but I worked with Ag Leader Sure Stops when I worked as a tech. The first Sure Stops were NOT polarity sensitive meaning the wires could be connected either way. The wires were both white as I recall.
Later in history Ag Leader made them polarity sensitive. One wire was red (+12V) and the other black (Ground). This was no problem as long as Sure Stop clutches were connected to a an Ag Leader harness on the planter since the wiring was made by Ag Leader and was correct. This was no problem for the installers since they would only plug together one way.
In an Ag Leader system, each clutch receives 12VDC at all times. The system can then check for 12VDC returning on the other wire to determine if a clutch is "really out there". It does this on initial startup and occasionally through the day. This is a way for the system to warn the operator if there is a wiring issue. Suppose a wire got pinched or cut during folding/unfolding. The system could then warn the operator that the clutches if "found" don't agree with the configuration. This can be handy for troubleshooting.
Normally the wiring is healthy and all clutches receive a constant +12VDC. The Ag Leader Clutch Control Module can then complete ground to a Clutch when that row should not be planting. .
At first thought, one might have guessed that they would have used a constant common ground and switched On the +12V to stop a section from planting but Ag Leader did not do it that way. Many other brands did/still do.
So with some Sure Stop Clutches and non-Ag Leader controls there can be a concern. .
So in your case the wires might or might not need to be switched. Possibly both wires are white so it wouldn't matter. If one wire is red and the other is black it would matter BUT this might already have been done.
I would install the system but do not connect the Sure Stops. With the electronics ON and all sections set to STOP planting there should be 12V between the two wires leading to each clutch. Observe the polarity of the reading. It should be either +12VDC or -12VDC. This should help you determine which wire on the planter is +12V. That wire needs to mate up with the red wire of each Sure Stop Clutch. The other wire should mate up with the black wire of each Sure Stop clutch.
This should help you decide if the wires need to be swapped or if they are correct.
Edited by tedbear 4/3/2026 12:26
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Ag Leader Surestop Clutches to older JD Rate Controller
