Is anyone familiar with the "speed input" wiring on a JD Compu-Trak 350? We use one for a replant planter & want to put it in a different tractor this year. In the past, we've had it in a non-gps equipped tractor so it had a "puck" gps receiver that Shoup sells attached to the cab roof. This year it'll be going in a 7280R. This tractor has the speed output accessible by a port on the RH instrument cluster (vertical post).

In the 2nd photo below you see a 3-wire "weatherpak" connector to the right. That wire originates from the 350. On the left side of photo 2, you see the multi-pin plug on a cable that JD sells to send speed info to a monitor from the RH vertical post. Even though that connector has about 9 pins in it, there are only 2 wires in the bundle. As you can see, they are the the red & the black wires with the bare ends.

The 350 monitor speed input has 3 wires you can see labelled speed input. A red, a black, and a green. So....would you guess the red/black wires should mate up & there is no use for that green wire going into the 350? I will be putting a weatherpak connector on those wires, just want to make sure of my wiring.

Thanks