February 6, 2005

I had ordered the FADEC cabin harness kit a while back from Aerosance with annunciator box for two LED’s rather than two incandescent lamps. Unfortunately, I thought the lamps were part of the ACU, but that is not the case. Which is good in some respects, but bad in others. Good because I have enough lamps in my warning lamp strip to accomadate the FADEC Caution, FADEC Warning, and the Fuel Pump lamps called out by the FADEC wiring diagram. Bad because the lamps I have are incandescent! Doh! I need to call Aerosance and see if I can exchange the unit.

The FADEC cabin harness kit arrived just before the christmas holidays, but I haven’t had much chance to do anything with it until now. The cabin harness is pretty chunky! Shielded cable everywhere!

My first task was to figure out the best place to put the bulkhead connectors through the firewall. I made a doubler plate out of 0.063" sheet, and proceeded to make the round holes with an anti-rotation flat on them. Now that was fun! Lots of filing.

Here are the connectors in place. This is the cabin side.

This is the firewall side. The two ECU’s will be mounted below on the lower firewall. It’s gonna be a squeeze, because my oil cooler is going somewhere there too!