Suntech Plug & Play OBD-II Tracker with Y Harness Installation Guide

Installation Instructions for plug & play OBD-II Tracking Devices with the “Y” Wiring Cable

Tools required: 7mm ratchet wrench & zip ties (provided in package)

Find the vehicle’s OBD-II port location. It is typically below the driver’s side of the dashboard or in the center console.

Remove the vehicle’s existing OBD-II bracket with a ratchet wrench (typically 7mm).

Remove the vehicle’s female OBD-II port from the bracket.

Plug the male adapter from the tracking device’s harness into the vehicle’s female OBD-II plug.

Secure the connected plugs below the dashboard with a zip tie.

The female end of the OBD-II plug should be exposed so it can be mounted into the vehicle’s bracket.

Use the ratchet wrench to mount the device’s female OBD-II port into the same location as the vehicle’s original OBD-II port.

Zip tie any excess wire to a wire loom behind the dashboard.

connect OBDII unit to harness
Plug the rectangular plug into the device.

hide gps device

With the QR code sticker facing up, route the device under the dashboard toward a location in the upper portion of the dashboard (if possible)

hide gps tracking device

Find a secure location below the dashboard to mount the device. Use zip ties to secure it to a wiring bundle or to the vehicle’s frame to ensure that it does not slip out while the vehicle is in operation.

Required Information

Record the serial number for the device and the VIN/Year/Make/Model of the vehicle on your worksheet for activation and email it to us at The devices will update in the system as they begin driving after the activation process is complete.

Contact us at 888-803-0200 Option 2 if you encounter any issues with the installation

Testing & Troubleshooting the Suntech ST4500 Series Devices

In order to test the device, the vehicle must be parked outside in an open area so that it can receive a GPS lock. The device’s LEDs will indicate proper operation.

If you do not observe LED’s, please check the owner’s manual to determine which fuse provides power to the OBD-II port and verify that it isn’t bad.

Blue LED’s – Cellular Connectivity

plug & play tracker

The unit will power up as the vehicle’s ignition is turned on. The blue LED indicates cellular connectivity.  A normal operating device will blink once followed by a long pause.
(there may be some brief flickers initially while the device initializes)

Blue LED errors will display the following blink patterns:

2 blinks and long pause

Issue: Can’t connect to server

Resolution: Reach out to

3 blinks and long pause

Issue: Can’t communicate with cell network

Resolution: Drive vehicle

4 blinks and long pause

Issue: Device may be defective

Resolution: Reach out to

6 blinks and long pause

Issue: Weak cellular connectivity

Resolution: Drive vehicle

7 blinks and long pause

Issue: SIM card is missing

Resolution: Open device & verify that SIM card is properly seated

Red LEDs – GPS Signal

gps tracker LED codes

The RED LED indicates GPS signal. Normal operation should display 1 red blink followed by along pause.

Red LED errors will display the following blink patterns:

2 blinks and long pause

Issue: GPS reception is weak

Resolution: Move to an open outdoor area

4 blinks and long pause

Issue: Internal GPS not working

Resolution: Device may be defective. Reach out to

Contact support at 888-803-0200 Option 2 or if you encounter any issues with the installation or the troubleshooting steps do not resolve your issue

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