Table of contents

Installation Guide: Wireless BLE Relay with Asset Trackers

Overview

This guide explains how to install and wire a wireless BLE relay for remote control of fuel pumps or starter circuits via an asset tracker. The solution enables remote immobilization or reactivation of vehicle systems using BLE communication between the asset tracker and the relay.

Components Required

• Wireless BLE Relay Module

• BLE-compatible Asset Tracker

• 7V–32V DC power supply (vehicle battery or auxiliary source)

• Standard wiring tools (cutter, stripper, crimper)

Wiring Diagram

Below is the visual wiring diagram for connecting the relay:

Wiring Instructions

1. Power & Ground Connections

• Red Wire → Connect to +7V–32V DC Power Source

• Black Wire → Connect to Vehicle Ground

These connections power the BLE relay module.

2. Fuel Pump or Starter Circuit Control

Cut the control wire leading to the fuel pump or starter. Connect the two ends of this wire as follows:

• Blue Wire (Common) → Connect to one side of the cut wire

• Orange or Gray Wire → Connect to the other side

You can choose between two configurations:

a. Orange Wire – Normally Closed (Recommended)

• The circuit is closed by default (i.e., fuel pump/starter remains active).

• When the relay is triggered, the circuit opens, cutting off the pump/starter.
  ✅ Best for immobilization by default with manual or remote trigger control.

b. Gray Wire – Normally Open

• The circuit is open by default (i.e., fuel pump/starter is disabled).

• When the relay is triggered, the circuit closes, activating the pump/starter.
  ✅ Use this when you want manual enabling on demand.

⚠️ Recommended setup: Use the orange wire for standard immobilization control.

Step-by-Step Installation

Step 1: Mount the Relay

• Secure the relay in a dry, concealed area near the engine fuse box or dashboard.

• Ensure BLE range coverage between the asset tracker and the relay location.

Step 2: Connect Power Wires

• Connect the red wire to the ignition-switched or constant power source (7–32V).

• Connect the black wire to a solid ground on the vehicle chassis.

Step 3: Cut & Wire the Fuel Pump or Starter

• Locate and cut the control wire of the fuel pump or starter.

• Connect:

• One cut end to blue wire (Common)

• The other cut end to orange or gray, based on the required control logic

Step 4: Pair the Asset Tracker

• Ensure the asset tracker is BLE-compatible and configured to communicate with the relay.

• Use the asset management platform or mobile app to pair and test the relay’s control signals.

Step 5: Test Functionality

• Simulate relay triggers using the tracker interface.

• Ensure the fuel pump/starter activates or cuts off as expected.

• Secure all wiring and cover exposed areas with insulation.

Relay Behavior Summary

Troubleshooting