New to the forum...I have a 6320 with a power quad transmission. The shuttle shift will not engage forward or reverse nor will the power quad shift with the shift buttons on the manual gear shifter. Checked all fuses in the fuse panel, all are good. All connectors under the tractor on the transmission are connected. I do not have a TSM to try and trace what might be breaking the connection. Does anyone have any ideas? The tractor runs, hydraulics work correctly on load and 3-point hitch. Manual says if caution light only flashes, there is a malfuntion with the transmission electrical system.