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StreetPilot 7200/7500 Owner’s Manual 53
APPENDIX
DR Cable Wiring
The Dead Reckoning (DR) cable is used by the 7500
to provide dead reckoning, which allows the 7500 to
continue to get navigation guidance even if it loses GPS
reception. The DR cable is also needed for both the 7200
and 7500 to use a backup camera. The DR cable must be
installed to the Reverse Light Switch. For information
about configuring the backup camera, see page 34.
The DR cable connections must be installed by a
Garmin-authorized, licensed installer.
WARNING: The terms of the Garmin Warranty
require that the DR (Dead Reckoning) cable with
bare wire leads be installed by Garmin-authorized,
licensed installers.
Connecting the DR Cable to the Vehicle
1. Connect the Orange DR 1 wire to the Vehicle
Speed Sensor Signal. Do not connect to the
vehicle speed sensor signal from the ABS
control. (Note: For backup camera, you only
need to connect DR 2.)
2. Connect the Green DR 2 wire to the Reverse
Light Switch.
Connecting the DR Cable to the 7500
1. Open the weather cap on the 12-Volt plug to
access the DR connector.
2. Plug the end of the DR cable into the connector.
Push the plug in until it is fully seated.
DR 2 - Green to Reverse Light Switch
DR 1
DR 2
DR 1 - Orange to Vehicle Speed Sensor Signal
Do NOT cut or splice the cable
between the limiter and plug.
If you need to cut or splice the cable, cut or splice past limiter.