5.21 ELECTRICAL (continued)
OPEN BARREL TERMINALS (continued)
Now you can install the pin into the connector's housing. In Figure 1 you can see the barbs
that snap out to keep the pin from being pulled backwards through the hole. The stop tabs
will bottom out in the hole from behind to keep the pin from coming on through.
The technique I've just described is typical of the AMP Mate-n-Lock and the larger (.093"
pins) sized Waldom/Molex connectors. The smaller Waldom/Molex connectors (.063") pins
use pockets "E" for wire grip and "B" for insulation grip. Wires of up to 14AWG and
carrying up to 10 Amps may be routed through this style of connector. The wire I illustrated
here is 20AWG. Use pocket "C" to crimp 16 and 14AWG wire. 22AWG wire is somewhat
dicey in .093" pins. Waldom/Molex connectors also come in a smaller size having a
nominal pin diameter of .063". Use pockets "E" and "B" to install the smaller pins like
D-subminiature pins found on many instruments and avionics products.
Some connectors may be supplied with loose pins. In this case, you will not have to trim
the stop tabs - they will be the proper length as supplied. You may still have to shorten
either wire grip or insulation grip wings to work well with your wire of choice. It's always a
good idea to experiment with extra pins on scraps of wire to see what it takes to achieve
the smooth and tight crimp/grip shown on Page 05-23, Figure 6. Each manufacturer of
these connectors offers an extraction tool that will let you remove a pin without damage for
re-use in the same or a different location on the connector. Female pins are installed the
same way.
FIGURE 1
PUSH
TERMINATED
WIRE INTO
REAR OF
CONNECTOR
HOUSING.
RETAINING
BARBS
EXPAND
ON THIS
SIDE AS
PIN SNAPS
INTO
PLACE.
PAGE
REVISION:
DATE:
VAN'S AIRCRAFT, INC.
PAGE
REVISION:
DATE:
04/15/13
05-24 RV-ALL
0
