I ran wires down the left and right sides to items which will be mounted on the floorboards. Mike and headset jacks, headset power jacks, cigarette light outlets, auxiliary audio inputs, autopilot pitch wiring, and a 110 volt inverter power. I labeled both ends with small paper labels held in place with clear heatshrink. I barely had enough room in the 5/8 inch conduit I ran (a couple years ago); I ran then wires up the firewall by using cushioned Adel clamps on the inverted-V tubing of the firewall.