I've just been adding one wire after another, making a little progress with every work session. This is one of the two big connectors on the GSU 73, specifically the one that includes most of the engine/airframe analog and frequency inputs. Man, these high-density connectors can be tricky to deal with. The bundle of short wires pointing to the right is a collection of pigtails for all the shielded wires, which will eventually be affixed to the connector backshell. Just visible coming out of the D-sub connector is the harness for the config module, which is a little EEPROM device that backs up important calibration settings.
I keep checking little wiring jobs off my to-do list… here's the magneto P-lead. The magneto switch is upside-down, since closing the switch equals "no spark".
Here's the power and oil pressure connections to the Hobbs meter. I know I don't really need a mechanical hourmeter since I have all this fancy electronic stuff to keep track of the airframe time for me, but I feel better having something that absolutely cannot lose time; I had a bad experience with another vendor's EIS product once upon a time.
Forward of the firewall, the wiring for the engine sensors is just coiled up, since I have to finish the cowl and baffling before I can hook things up for good.
