Decided to use the cable safe II fitting at the firewall for the co-pilot throttle. It fit perfectly so we went ahead and installed the throttle. Drilled the small fitting and installed both throttle ends to it. Very straightforward and the throttles work in unison. Installed the 12 AWG wires from the RR to the capacitor and 10 AWG wires to the diode and ground. Dean installed a beefed up diode to the avionics shelf.