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GMX 200 Installation Manual Page 3-3
190-00607-04 Revision D Table 3-2. Recommended Crimp Tools
20-24 AWG (P2001) =22-28 AWG (P2002)=
 Contacts listed are not to be used for configuration module wiring. Use the contacts supplied with the
configuration module when installing configuration module wires in P2001.
 Non-Garmin part numbers shown are not maintained by Garmin and are subject to change without notice.
 For configuration module pins, ensure that the crimp tool is set to crimp 28 AWG wire.
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Page 3-4 GMX 200 Installation Manual
Revision D 190-00607-04
3.4.2 Backshell Assembly and D-Subminiature Connectors
The GMX 200 main connector kit (P/N 011-01283-00) includes one Garmin backshell assembly and one
Garmin ground adapter assembly and is used by both the GMX 200 and GMX 200 I/O models. The
GMX 200 I/O connector kit (P/N 011-01283-01) includes one Garmin backshell assembly and one
Garmin ground adapter assembly and is used by the GMX 200 I/O models only. Backshell connectors
give the installer the ability to terminate shield grounds at the backshell housing using the Shield Block
ground kit. Table 3-3 lists Garmin part numbers for the GMX 200 D-Sub Connectors and the Backshell
Table 3-3. Backshell Assembly
Figure 3-1 Ref Description Garmin P/N Notes
1 Cast Housing (From Garmin Backshell kit.) 125-00084-00 
2 Shield block 117-00147-01 
Screw, 4-40 x.250, FLHP100°, SS/P, Nylon. 211-63234-08 
4 Multiple Conductor Shielded Cable
(See Interconnect Diagrams, Appendix E) As Required 
5 Shield Terminator As Required , 
6 Wire, Insulated (20 – 22 AWG) As Required , 
7 Socket Contacts 336-00022-00, or
Ring terminal, #8, insulated, 18-22 AWG, 14-16
Screw, PHP, 8-32x.312", Stainless or Cad Plated
10 Split Washer, #8, (.045" compressed thickness)
Stainless or Cad
-plated steel MS35338-137,
11 Flat Washer, #8, .032" thick, .174"ID, .375" OD,
Stainless or Cad Plated Steel NAS1149CN832R,
12 Silicon Fusion Tape 249-00114-00 
13 Strain Relief 115-00499-03 
Screw,4-40x.375,PHP,SS/P,w/Nylon 211-60234-10 
15 Cover 115-00500-03 
Screw,4-40x.187,FLHP100,SS/P,w/Nylon 211-63234-06 
 Supplied as part of GMX 200 Connector Kit P/N 011-01283-00.
 Supplied as part of GMX 200 I/O Connector Kit P/N 011-01283-01.
 Supplied as part of Backshell Kit P/N 011-00950-03 (included in kits 011-01283-00 and 011-01283-01).
 Supplied as part of Ground Adapter Kit P/N 011-01169-01 (included in kits 011-01283-00 and 011-01283-01).
 Not supplied – must be purchased separately.
 Solder sleeve with pre-installed lead may be used instead of items 5 and 6.
Page 23 from 106
GMX 200 Installation Manual Page 3-5
190-00607-04 Revision D 220.127.116.11 Shield Block Assembly Procedure
The parts for the connector and backshell assembly for GMX 200 installations are listed in Table 3-3 and
shown in Figure 3-1.
Figure 3-1. Shield Block Install onto Backshell Connector Assembly
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Page 3-6 GMX 200 Installation Manual
Revision D 190-00607-04 1. Attach the Shield Block (2) to the backshell (1) by inserting the flathead screws (3) through the holes
on the Shield Block and threading into the tapped holes on the backshell (1). (See Figure 3-1).
Figure 3-2. Shielded Cable Preparation
2. At the end of the shielded cable (4), strip back a 2” maximum length of the jacket to expose the braid.
Remove this exposed braid. Carefully score the jacket 1/4” to 5/16” from the end and remove the
jacket to leave the braid exposed.
Solder sleeves with pre-installed shield drains may be used instead of
separate shield terminators and individual wires.
3. Connect a 20 or 22 AWG wire (6) to the exposed shield of the prepared cable assembly. (See Figure
3-2). Note: AC 43.13 may be a helpful reference for termination techniques.
Solder Sleeves with pre-installed lead: A preferred solder sleeve is the
Raychem S03 Series with the thermochromic temperature indicator.
These solder sleeves come with a pre-installed lead and effectively take
the place of items 5 and 6. For detailed instructions on product use, refer
to Raychem installation procedure.
4. Slide a shield terminator (5) onto the prepared cable assembly (4) and connect the wire (6) 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 (6) to be attached.
5. Repeat steps 2 through 4 as needed for the remaining shielded cables.
Each tapped hole on the Shield Block (2) may accommodate only two ring terminals (8).
It is preferred that a maximum of two Wires (6) be terminated per ring terminal. Two
Wires per ring terminal will necessitate the use of a Ring terminal, #8, insulated, 14-16
AWG (MS25036-153). If only a single Wire is left or if only a single Wire is need for
this connector a Ring terminal, #8, insulated, 18-22 AWG (MS25036-149) can
accommodate this single wire. If more wires exist for the connector than two per ring
terminal, it is permissible to terminate three wires per ring terminal.
6. Terminate the ring terminals to the Shield Block (2) by placing items on the Pan Head Screw (9) in
the following order: Split Washer (10), Flat Washer (11), first Ring Terminal, second Ring Terminal
if needed, before finally inserting the screw into the tapped holes on the Shield Block.
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GMX 200 Installation Manual Page 3-7
190-00607-04 Revision D 7. Wrap the cable bundle with Silicone Fusion Tape (12) (GPN: 249-00114-00 or a similar version) at
the point where the backshell strain relief and cast housing will contact the cable bundle.
8. Place the smooth side of the backshell strain relief (13) across the cable bundle and secure using the
three screws (14). Warning: Placing the grooved side of the strain relief across the cable bundle may
9. Attach the cover (15) to the backshell (1) using two screws (16).
18.104.22.168 Configuration Module Installation
Table 3-4 lists part numbers for the Configuration Module Kit, which is used with P2001 only.
Table 3-4. Configuration Module Kit – 011-00979-02
Figure 3-3 Ref Description Garmin P/N
1 Configuration Module, PCB Board Assembly w/EEPROM 012-00605-00
2 Spacer, Config Module 213-00043-00
3 4-Conductor Harness 325-00122-00
4 Socket Contact, Crimp, #20 336-00022-01
Table 3-5. Configuration Module Wire Color Reference Chart
Color Function P2001 Contact
Black Ground 27
Red Vcc 24
Yellow Data 19
White Clock 17
Assemble the configuration module as follows:
1. Crimp socket contacts (4) onto each wire of the four-conductor wire harness (3). Strip 1/8” of
insulation from each wire prior to crimping.
2. Insert newly crimped socket contacts and wires (3, 4) into the appropriate connector housing
location as shown in Figure 3-3.
3. Apply the spacer (2) by wrapping it around the PCB Board (1) making sure to insert the plastic
connector mounted on the board into the hole provided in the spacer.
4. Plug the four-conductor wire harness (3) into the connector on the PCB Board (1).
5. With pad (2) in position, insert PCB Board (1) into the backshell recess.
6. Orient the connector housing so that the inserted four conductor wire harness (3) is on the same
side of the backshell as the inserted PCB Board (1), as shown in Figure 3-3.
7. Attach cover to backshell using screws.