You can see the "D" sub connector pin laying next to the wire. Notice the little Gold rings on one end? That is the end that the wire goes into. Don't get it backwards or it won't work right.
Most modern radios and electronics equipment use Sub-Miniature "D" connectors, like you see on the back of a computer. These connectors are really nice and fairly easy to assemble. You will need the special crimping tool from B&C elect or other electrical tool suppliers. The crimper comes pre-calibrated to put just the right amount of crimp pressure in just the right place on the "D" connector pins.
Here is how to make up the wires with "D" Sub connector pins. Strip
1/4" off the wire:
You can see the "D" sub connector pin laying next to the wire. Notice
the little Gold rings on one end? That is the end that the wire goes
into. Don't get it backwards or it won't
work right.
Put the wire into the end with the gold rings on it like this:
Slide the whole pin (with the wire in it) into the crimper as far as it will
go until it bottoms out:
The crimper has a ratcheting action so you can't under or over crimp it.
Make sure the wire is all the way in and squeeze the crimper until it releases
again and lets the pin/wire be pulled out..
Here it is after crimping:
Pretty fool proof system.
Make each wire as noted in the schematic supplied with the equipment, label it and install a Sub "D" connector pin on the end. The Sub "D" connector is numbered with VERY fine numbers next to each hole. You have to look with a magnifying glass and a strong light, held at an angle so the light is across the surface of the pin, to see the numbers.
The installation manual will come with a wiring diagram showing the pin-outs (which wire goes into which numbered hole on the connector).
Each wire and pin is then inserted into the connector, into its proper numbered
place, until you feel a "click" and you will know its locked in
place:
Notice the large heat shrink. Once its all connected, the heat shrink
will be heated to hold all the wires in place with no strain on them.
The completed connector has a cover that attaches over it to protect the
wire harness, and the assembly is complete. Here it is plugged into
the back of the Dynon D100 unit.:
The remaining radios, switches and avionics were wired up much in the same way. The EIS engine monitor came with the "D" sub pin connectors pre-wired as did the transponder that I bought.