Installing your GM250 Tracking Unit How to install your GM250 tracking unit with internal GPS/cellular antenna and wiring harness. Tools required to perform the installation: - Screwdrivers - Wire strippers and cutters - Crimping tool - Voltmeter Wiring Description RED WIRE BLACK WIRE YELLOW WIRE GREEN WIRE BLUE WIRE VIOLET WIRE PINK WIRE BLACK WIRE BROWN WIRE GREY WIRE WHITE WIRE BLACK WIRE GREEN/WHITE BLACK WIRE ORANGE WIRE BLACK WIRE +12/24 VDC Constant Power (PIN 1) Chassis Ground (PIN 2) Ignition Sense (PIN 3) – Positive Trigger Input 1 (PIN 4) – Positive Trigger Input 2 (PIN 5) – Negative Trigger Input 3 (PIN 6) – Negative Trigger Analogue 1 (PIN 7) Ground (PIN 8) Output 1 (PIN 9) Output 2 (PIN 10) Output 3 (PIN 11) Ground (PIN 12) 1 Wire IO (PIN 13) 1 Wire Ground (PIN 14) Buzzer (PIN 15) Ground (PIN 16) All outputs are open collector type – (Grounded when enabled) Do not connect power 1 Wire IO or 1 Wire Ground to avoid damage. Getting Started Mounting the GM250 Unit Due to the GM250 series unit having an inbuilt G sensor, the unit must be mounted securely and have the side where the sim card and serial number is towards the ground. Make sure the Antenna connections are towards the rear of the vehicle. The unit is to be screwed, cable tied or double sided taped in place so long as the surface it is secured to is sturdy and fairly rigid with the vehicle. Avoid mounting the GM250 unit in close proximity of the vehicles stereo system to avoid interference. Make sure the GM250 unit is mounted in a location where it will not be exposed to the elements or moisture from air conditioning systems or alternatively mount the unit inside a sealed watertight enclosure. Locate a Continuous Power Source on the Vehicle The tracker requires a constant +12/24 VDC power source to operate. The device will operate with only the power and ground connected, but the ignition sense wire and the optional starter disable relay can also be connected. If the ignition sense wire is connected with a 12/24 VDC system, you will be able to get tracking information for ignition ON and OFF events. Connect the RED and BLACK wires It is recommended to connect to the main power cable directly to the main power supply cable of the ignition barrel. Connect the RED and BLACK wires on the attached wiring harness to continuous power and ground on the vehicle. The RED wire on the tracker wiring harness is connected to a continuous +12/24 VDC source The BLACK wire on the tracker wiring harness is connected to vehicle chassis GROUND The Ground wire (BLACK) is connected to the vehicles frame or metal parts that are fixed to the vehicle chassis or ground wiring system. If the wire is fixed with a bolt or screw, the loop must be connected to the end of the wire. For better contact scrub paint from place where loop is connected. When the module is connected, be sure to measure voltage again to make sure it did not decrease with load. Be sure that after the vehicles computer falls asleep, power is still available on chosen wire. Depending on the vehicle, this may happen in a 5 to 30 minute period or not at all. Install the Ignition Sense Wire (optional) Locate the vehicle’s ignition wire by consulting the appropriate wiring diagrams and connect the ignition sense wire (YELLOW) to the vehicle’s ignition line using the provided connectors. The vehicle ignition wire can be verified by measuring for the vehicle’s operating voltage while the key is turned to an ‘ON’ or ‘START’ position. The vehicle’s ignition wire should read 0 VDC when the key is left in the ‘OFF’ position, and typically between 11V and 14V when in the “ON” position. Secure the Tracker and Extra Wiring to the Vehicle Verify the Installation Allow 5-10 minutes for the tracker to power up and obtain its first GPS fix. There are 3 LEDs on the back of the unit, solid green indicates the unit has power, and solid amber indicates the device has a GPS Fix, the red LED will pulse twice and then go off for a second and repeat the process, this means the device is connected to the Trakpro Network Connecting Antennas When placing antennas avoid easily reach places. Under the dash is best so long as the antenna is as close to the windscreen as possible and angled out of the windscreen. Avoid GPS antenna placement under metal surfaces GPS cable cannot be bent more than 80 degrees GPS antenna must be placed with dome facing towards the sky. The flat section of the antenna must be facing towards the ground. Important Notes Make sure that the vehicle is outside and not under cover also do not close up the vehicle until after all the procedures have been carried out and you have verification from Trakpro that everything is correct. All installations MUST be confirmed with Trakpro during normal business hours of 8:30am to 5:30pm EST Monday to Friday unless previously arranged once all connections have been made and the antennas have been mounted and connected. Adhering to the following steps will greatly reduce your time on the phone and the risk of unnecessary vehicle downtime or costs.
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