Saturday, January 25, 2025

Final Cockpit Wiring

My shielded wire and a few other odds and ends arrived.  The ELT can receive coordinates from a GPS and then send those coordinates out, and that's what the extra wire is for.  The connection method they use is really laughable though. They have you solder four wires to little itty bitty DIN pins.  I'll be pretty shocked if they last.  The pins are about 1/16" long, very thin and not far apart from each other, so holding a wire up against them during soldering is next to impossible.  This is probably why the instructions say to fill the cavity up with RTV and then wrap it all with tape.  Pretty ridiculous for a certified system.  If it ever fails I'll just cut the DIN connector off completely and use individual connectors.  The main thing I dislike about the DIN connector is the fact that the male and female pieces don't positively lock with each other.


Since the DIN connectors don't actually lock together, I mounted the wire above the ELT and zip tied the two connectors so they can't separate.  The short white wire sticking out from the aft connector is a test wire.  Once I hook the GPS unit up, I can use this test wire to see if the ELT is receiving the signal.


I finished wrapping up the left side wiring.  At least I did until I realize I forgot something.  It's starting to get organized!


The hodgepodge around the fuel selector looks like I mess, but in reality it's actually not too bad.  There's good clearance around all of the wires and fuel lines.  My next step tomorrow will be to re-mount the fuel pump and make sure there are no interference issues.