Moved the Pilot's headphone wires from the J1 connector to J2. Removed the splices from the Pilot's mic wiring (which spliced the two pilot's push to talk switches with the pilots mic wires), cut it shorter to fit the route to the J1 connector and re-spliced. This time I soldered the splice instead of using a crimp connector because I think solder joints are more dependable than crimped joints. Plus they take up less space.
Installed solder splices and shield grounds to the co-pilots mic and phone wires. Solder spliced the co-pilot’s mic wires and co-pilot's push to talk switch wires. Terminated all of the wires with D-sub pins and installed the pins in the D-sub connectors.