Shielded Cable Preparation - Garmin GTX 335 w GPS Installation Guidance

4.3.7

Shielded Cable Preparation

NOTE
Solder sleeves with pre-installed shield drains should be used instead of separate shield
terminators and individual wires. Although separate shield terminators and individual
wires can be used, a preferred solder sleeve is the Raychem S02 Series with the
thermochromic temperature indicator. These solder sleeves come with a pre-installed lead
and effectively take the place of items 2 and 3 in figure 4-7. For detailed instructions on
use, refer to the Raychem installation procedure.
Prepare all of the shielded cables using one of the methods shown in figure 4-7.
Keep shield drain components as short as practical with a maximum length of 3".
• Refer to section 4.3.8 for information on shield termination to the connector backshell.
The procedures in this section provide an outline for all shield wiring preparations (existing wiring
included) terminated at the GTX connectors.
1. At the end of the shielded cable (3), strip back a 2.5" maximum length of the jacket to expose the
braid.
2. Remove this exposed braid.
3. Carefully score the jacket 1/4" to 5/16" from the end.
4. Remove the jacket to leave the braid exposed.
5. Connect a 20 or 22 AWG wire (1) to the exposed shield of the prepared cable assembly.
◦ Refer to figure 4-7.
◦ Refer to AC 43.13-1B Chapter 11 for termination techniques.
6. Slide a shield terminator (3) onto the prepared cable assembly and connect the wire (2) to the
shield using a heat gun approved for use with solder sleeves.
◦ The chosen size of solder sleeve must accommodate both the number of conductors present
in the cable and the wire (2) to be attached.
◦ Repeat steps 1 through 3 as needed for the remaining shielded cables.
7. Strip the exposed twisted wire 0.17" from the end.
8. Crimp pins (4) onto the wires.
9. Crimp a correctly sized ring terminal (5) onto the end of each shield drain (2).
10. Repeat steps 4 – 6 for the remaining wires/shields.
11. Using the interconnect diagrams in appendix B, for the applicable connections and pinouts, insert
the pin into the connector housing location. Refer to figure 4-7.
12. Make sure the pin is engaged into the connector by gently tugging on the wire.
13. Wrap the cable bundle with silicone fusion tape at the point where the backshell strain relief and
cast housing contact the cable bundle.
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GTX 335 w/GPS Installation Guidance
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