Plans, Wire Diagrams, and Documentation
12/27/22 - 8.0h
I studied the lighting harness specs in the plans, integration with the RV-14 Common Fuselage Harness (WH-00125), and the various installation guides for the lights and sensors for each wing. My goal was to get as good an understanding of each wire in the harness as I possibly could before labeling the wires and routing the harness. I also wanted to see what (if any) modifications are required to the harness for the equipment I plan to install.

WH-00011 (Left Wing) Pin Out:
- - Pin 1 (L147, 14 AWG, Red): WAT P36G3L landing light power

- - Pin 2 (L148, 14 AWG, Yellow): WAT P36G3L landing light ground to fuselage

- - Pin 3 (L149, 22 AWG, White): This wire runs to the landing light bay, and then gets terminated with a butt-splice. It appears to be there in case you need an additional wire for the landing light to maybe control the wig-wag function or a second power source for a combined taxi/landing light. I don't need this wire, so I plan to remove it and replace it with a 14 AWG wire for my pitot heat ground. According to the G3X/G3X Touch Installation Manual, “Aircraft power wiring to probe should be a minimum of 14 AWG up to 12 FT … (AC 43.13-1B).”

- - Pin 4 (Empty): The WH-00125 wiring diagram includes a note for the empty pin on the WH-00011 harness that says, “Use this location for pitot heat wire.” The note also says Van's does not support or recommend flight into IMC, which is why they don't include a pitot heat power wire with the WH-00011 harness. I will use this empty pin to run a 14 AWG power wire, twisted with the pitot ground wire in Pin 3, to the pitot/AoA probe

- - Pin 5 (Q427, 18 AWG, White): Resistance reading from the IE F-385B Fuel Sender.

- - Pin 6 (L420, 14 AWG, Black): Wire Harness ground to the inboard wing rib.

- - Pin 7 (L423, 22 AWG, Green): AeroLEDs Pulsar NS strobe synchronization between the wing tip and tail strobe lights

- - Pin 8 (L424, 18 AWG, Yellow): AeroLEDs Pulsar NS strobe light power

- - Pin 9 (L425, 18 AWG, Red): AeroLEDs Pulsar NS NAV/POS light power

Connector C401J (Left Wing) Pin Out:
- - Pin 1 (L422, 18 AWG, Black): AeroLEDs Pulsar NS ground wire. The wire is routed to the ground terminal of the landing light, which is then returned to the aircraft fuselage ground location.

WH-00011 (Right Wing) Pin Out:
- - Pin 1 (L147, 14 AWG, Red): WAT P36G3L landing light power

- - Pin 2 (L148, 14 AWG, Yellow): WAT P36G3L landing light ground to fuselage

- - Pin 3 (Empty): I removed this wire from the molex connector since it will not be used with the lighting setup that I have planned.

- - Pin 4 (Empty)

- - Pin 5 (Q427, 18 AWG, White): Resistance reading from the IE F-385B Fuel Sender.

- - Pin 6 (L420, 14 AWG, Black): Wire Harness ground to the inboard wing rib.

- - Pin 7 (L423, 22 AWG, Green): AeroLEDs Pulsar NS strobe synchronization between the wing tip and tail strobe lights

- - Pin 8 (L424, 18 AWG, Yellow): AeroLEDs Pulsar NS strobe light power

- - Pin 9 (L425, 18 AWG, Red): AeroLEDs Pulsar NS NAV/POS light power

Connector C401J (Left Wing) Pin Out:
- - Pin 1 (L422, 18 AWG, Black): AeroLEDs Pulsar NS ground wire. The wire is routed to the ground terminal of the landing light, which is then returned to the aircraft fuselage ground location.

Wire and Connector Labeling, and Testing
12/28/22 - 0.9h
12/30/22 - 1.4h
The wire harness connectors are labeled before they are installed in the wing. The large inboard connector is “C400P” and the small connector for the wingtip lights is “C401J.” I also labeled the connector that mates with C401J. It is “C401P” according to the RV-14 Common Fuselage Harness drawing. The connectors for both WH-00011 wire harnesses (right and left wing) are labeled the same.
[Label Maker, 1/4” and 3/8” Heat Shrink Tube Labels, Heat Gun, Multimeter]

Wire Harness Installation
2/1/23 - 0.7h
2/2/23 - 1.8h
2/3/23 - 3.5h
I had to make a few changes to the wing lighting harness. The first change was to replace the wires to the wingtip nav/strobe. The wires in the supplied harness were about 10 inches short, and did not reach the nav/strobe molex connector when they were routed according to the plans. The wire harness spec says those wires should be 132 inches long, and mine were 122 inches. The new 132-inch wires worked great, and gave me 6 (3 on each wing) opportunities to crimp molex pins. The ground wire from the nav/strobe molex was also too short - 8 inches instead of 10. I installed new ground wires longer than spec to give me some flexibility when the ground wire gets connected to the negative terminal on the landing light.

I also added a ground and power wire for the pitot tube on the left wing harness. Pins 3 and 4 on the molex connector at the wing root are not used, so I repurposed those pins for the pitot heat wires. I ended up routing the pitot heat wires with the AoA tube, since the rest of the lighting harness wires maxed out the snap bushings without any additional space for the pitot heat wires. I think the routing I ended going with will work well.

The final task after routing the wires was to crimp a ring terminal on the wires for the fuel senders and connect those wires. I found it was easier for me to pop the pin out of the molex connector to give a few more inches to work with the fuel sender end of the wire, and then I pushed the pin back in the connector after it was attached to the fuel sender. I also attached the ground wire to the inboard rib as shown in the plan drawings.
[Flush Wire Cutters, Wire Stripper, Open Barrel (Molex) Crimper, Terminal Crimper]