The Garmin® GTM ™ 20 FM TMC Traffic Receiverreceives Traffic Message Channel (TMC) informationbroadcast over the FM radio data system. When a trafficmessage is received, your Garmin GPS device displaysthe incident on the map and can change your route toavoid the traffic incident. For coverage areas, refer to theGarmin Web site at http://www.garmin.com/fmtraffic.NOTE: The FM traffic receiver and GPSdevice must be in data range of an FM stationtransmitting TMC data to receive trafficinformation.NOTE: Garmin is not responsible for theaccuracy of the traffic information. The FMtraffic receiver simply receives signals fromthe traffic service provider and shows thatinformation on your Garmin GPS device.Service InformationThe GTM 20 includes a 15-month subscription to ClearChannel Total Traffic Network. The subscription activatesautomatically after your Garmin GPS device acquiressatellite signals while receiving traffic signals from thepay service provider. When the subscription expires,purchase a renewal subscription; see the back of this sheet.The GTM 20 can also use any free traffic servicesavailable in your current area.You can add other FM TMC subscriptions at any time.Check the Garmin Web site at http://www.garmin.com/fmtraffic for other available services.NOTE: You do not need to activate thesubscription that came with your GTM 20.The subscription activates automatically whenthe Garmin GPS acquires satellite signalswhile receiving traffic signals from the serviceprovider.Connecting Your GTM 201. Remove the power cable from your Garmin GPS.2. Connect the cable on the GTM 20 to the powerconnector on your Garmin GPS.To power connectoron Garmin GPSTo 12-Volt receptaclein vehiclePowerLED StatusLED3. Plug the other end into a 12-Volt receptacle.4. Route the cable so that it does not interfere withvehicle operating controls.Testing the GTM 20Observe the LED on the GTM 20: When the GTM 20is connected to power, the Power LED is on. The GTM20 may take up to five minutes to acquire data. The StatusLED indicates the status of the GTM 20:Yellow dot-dash flashes: determiningwhich country you are currently in.Yellow solid light: searching for signal.Red solid light: momentary sync loss.Green solid light: normal traffic data.Check the Map: Check the map on the GPS devicefor traffic incidents. Refer to the GPS device’s owner’smanual.Verify Signal Strength: If you are inside a garage whereradio signals cannot be received, you may need to take thevehicle outside.Verify that you are in a service area: Check for servicefrom the pay service or free services.GTM™ 20 OWNER ’S MANUAL