ZenTRACK Moto – Installation Guide

Suntech ST-4215

Written By Support Team

1. Purpose & Scope

This guide explains how to physically install and wire the Suntech ST-4215 tracker in a vehicle or powered asset:

  • Hardware overview

  • Mounting considerations

  • Wiring requirements (power, ground, ignition, and signals)

  • Basic post-install checks

2. Hardware Overview

Device type:

  • Suntech ST-4215 – wired GPS telematics device designed for permanent installation.

Typical capabilities (depending on wiring and configuration):

  • GNSS tracking (location, speed, heading)

  • Cellular connectivity to backend platform

  • Ignition detection

  • Support for inputs/outputs (e.g., digital inputs, relay control) when wired and configured

  • Power from vehicle battery (8V/38V DC)

Always refer to the wiring diagram included with the hardware for exact pinout and color codes.

3. Installation Prerequisites

Before installation:

  • Confirm the device is:

    • Correct model (ST-4215)

  • Gather:

    • Suntech wiring diagram for ST-4215 (image below).

    • Basic tools (wire strippers, crimpers, multimeter, zip ties, electrical tape).

    • Appropriate fuses and connectors according to your company’s standards.

4. Wiring Requirements

Important: Only qualified personnel should perform wiring on vehicle electrical systems. Always follow your company’s safety procedures.

The ST-4215 is a wired device. The core wiring typically includes:

  1. Power (V+)

    • Connect the device power wire to a constant 8/38 V source.

    • Source should be:

      • Stable and protected by an appropriate fuse.

      • From a reliable ignition-independent line (e.g., battery or fused power distribution point).

  2. Ground (GND)

    • Connect the device ground wire firmly to chassis ground or a reliable ground point.

    • Ensure the contact point is clean (no paint/rust).

  3. Ignition (IGN)

    • Connect the ignition sense wire to a circuit that is:

      • 8/38V when the key is ON

      • 0 V when the key is OFF

    • This allows the device to correctly detect ignition ON/OFF events.

    • Verify with a multimeter before connecting.

  4. Wired Relay Support (Starter / Ignition Cut-Off)

    Important: Relay installation and remote engine blocking must only be performed by a qualified automotive electrician or installer. Incorrect installation can cause vehicle damage or unsafe driving conditions.

    The Suntech ST-4215 can be used with an external wired relay accessory to remotely cut off the vehicle’s starter or ignition circuit. In this setup, the ST-4215 controls the relay through one of its outputs, allowing authorized users (via ZenduOne Platform) to:

    • Disable the starter/ignition so the vehicle cannot be started.

    • Re-enable the starter/ignition once the condition for blocking is removed (e.g., theft recovery completed, overdue payment resolved, etc.).

    • Wiring Instructions:

      • Relay control (coil) wiring

        • Connect the orange/amber wire from the ST-4215 to the yellow wire (pin 85) of the relay.

        • Connect the white wire (pin 86) of the relay to a switched +12 V source (vehicle positive). Ensure this line is properly fused.

      • Starter bypass (cut) wiring

        • Identify the starter wire in the vehicle’s ignition harness.

        • Cut the starter wire and connect each side to the relay:

          • One side of the starter wire → green wire (pin 30) of the relay.

          • Other side of the starter wire → green wire (pin 87a), the Normally Closed (NC) output terminal.

        • In normal conditions (relay not activated), the NC contact (30–87a) keeps the starter circuit closed and the vehicle can start normally.

      Safety & Operational Considerations

      • Use an industrial-grade, automotive-certified relay suitable for the vehicle’s voltage and current (starter circuit).

      • The relay is designed to be activated only when the vehicle is safely parked (ignition off / low speed as defined by your platform’s configuration).

      • Never use remote blocking in situations where it could:

        • Interrupt the engine while the vehicle is moving.

        • Create risk for the driver, passengers, or other road users.

      • Clearly inform the customer/operator that the vehicle is equipped with a remote blocking function and define internal policies on when and how it may be used.

      • After installation, test the relay in a controlled environment:

        • Confirm the vehicle starts normally when the relay is inactive (NC path working).

        • Confirm the vehicle does not start when the relay is activated (blocking engaged).

      • Always follow manufacturer wiring diagrams, vehicle service manuals, and local regulations regarding remote immobilization systems.

  5. Cable Management

    • Route cables away from:

      • Moving parts

      • Heat sources (exhaust, engine blocks)

      • Sharp edges

    • Use zip ties to secure wiring.

    • Ensure wiring does not interfere with pedals or driver operation.

5. Device Mounting

  1. Choose a mounting location:

    • Hidden from direct view (for security)

    • Away from heavy heat and moisture

    • With good GPS signal (if using internal antenna):

      • Under the dashboard

      • Behind plastic panels (avoid metal enclosures)

  2. Fix the device:

    • Use screws, brackets, or industrial double-sided tape, depending on the vehicle and your standard procedures.

    • Ensure it cannot rattle or move excessively.

6. Post-Installation Check (Field)

  1. Turn vehicle ignition ON.

  2. Verify the device gets power:

    • Check that blue and red LEDs blink at regular intervals (see Fulfillment/Operations docs for LED behavior).

  3. Confirm ignition detection:

    • Turn ignition OFF and ON and check in your platform (e.g., ZenduOne) if data is already flowing.

    • If the device is newly installed and not yet provisioned on the platform, report back to operations/fulfillment for activation and validation.

7. Documentation & Handover

Record:

  • Vehicle ID (plate, VIN, internal fleet ID)

  • Serial number (used as identification on ZenduOne Platform):

  • Installation date and installer name

  • Physical mounting location in the vehicle

  • Any special wiring (inputs/outputs)

Inform the operations team that the ST-4215 is installed, wired, and ready for platform onboarding/validation.