My routing of the wires
John,
My radios are on the left side of my dash.
Ran the wires across to the right side, down the gear leg tower, to the front of the wing spar, to the torque tube, left a loop for movement where the wires went to the torque tube and front stick, drilled a hole in the stick just above the pivot point and ran the wires inside the stick to the PTT in the handle.
The rear stick wires ran with the front stick wires to the torque tube then they branched off and I ran them along the torque tube to the rear stick. Drilled a hole in the stick above the slip joint wher the stick mounts and ran the wire inside the stick to the PTT in the handle.
I used .062 Molex connectors at the base of the stick to allow for a disconnect. Secured the wire either side of the Molex connector with a wiring clamp attached to the torque tube on the flat surface that supports the pivot point of the stick.
Hope this helps.
Ted