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Appendix A
48
DR Cable Wiring - For Dealer Installation
The StreetPilot 2650 must be installed by a licensed dealer due to the DR ( Dead Reckoning) cable con-
nections. The DR connection consists of a 2-wire harness that connects to the VSS (Vehicle Speed Sensor)
and Reverse Light Switch on the bare wire end and the External Speaker System with 12/24v DC Adapter
on the 2-prong molded connector end. See pages 44-47 for additional installtion instructions for the
StreetPilot 2650.
The Orange DR 1 cable wire attaches to the VSS. The unit software option ‘Odometer Wave Type’ needs to
be set to either ‘Square Wave’ or ’Sine Wave’ (see page 38). This may be determined either by contacting the
vehicle manufacturer or by using an oscilloscope. ‘Square Wave’ is the most common type. Do not con-
nect the DR Cable into the vehicle speed sensor signal from the ABS control.
The Green DR 2 cable wire attaches to the Reverse Light Switch. The unit software options ‘Reverse Light
Polarity’ needs to be set to either ‘High’ or ’Low’ (see page 38). Contact the vehicle manufacturer for polar-
ity or check with a voltmeter. Set to ‘High’ (most common) if a positive, high voltage is detected. Set to
‘Low’ if no or a low voltage is detected.
WARNING: the terms of the Garmin Warranty require that the DR (Dead Reckoning) Cable
with bare wire leads be installed by experienced installers at a qualifi ed installation facility
(i.e., auto electrical accessory installation center). The user should not attempt installation
without proper knowledge of automotive electrical systems and skill in the use of special
tools or hardware required for installation.
,
DR Cable Wiring (2650 Only)
DR 1
DR 2
DR 1 - ORANGE
DR 2 - GREEN
Do NOT cut or splice the cable-
beween the limiter and plug.
OK to cut or splice
past limiter.
Interface Tab (2650 Only)
2610_2650 OM.indd 48 8/1/2003, 4:16:17 PM