How Much To Add Remote Start

So, you're thinking about adding remote start to your ride? Excellent choice! It’s a fantastic convenience, especially during those brutal winters or scorching summers. This article will break down the installation process, assuming you already have some basic understanding of automotive electrical systems. We’ll be focusing on the wiring diagram, as that’s the key to a successful install. Think of this guide as your roadmap to remote start bliss.

Purpose: Your Roadmap to Remote Start Success

This diagram isn't just a pretty picture; it's your essential tool for a successful remote start installation. Whether you're tackling a repair, learning about vehicle electronics, or customizing your car, understanding the wiring diagram is paramount. Without it, you're essentially stabbing in the dark, which can lead to damaged components, a non-functional system, or, worse, a fire! It clearly shows the interconnections between the remote start module, the vehicle's existing electrical system, and any necessary add-on components. By carefully following the diagram, you can ensure a safe and functional installation, avoiding costly mistakes and headaches.

Key Specs and Main Parts

Let’s get familiar with the core components and some critical specifications you'll encounter:

Remote Start Module: The brain of the operation. This module receives the signal from your remote and initiates the starting sequence. Look for modules with good reviews and features like two-way communication (confirms start), extended range, and smartphone integration.
Wiring Harness: This bundle of wires connects the remote start module to the vehicle’s electrical system. Pre-made harnesses can significantly simplify the installation process, but you'll still need to understand the connections.
Hood Pin Switch: A crucial safety feature. This switch prevents the vehicle from starting remotely if the hood is open. It's typically a normally closed (NC) switch.
Brake Switch Connection: Another safety measure. This connection disables the remote start if the brake pedal is pressed. Usually, you'll tap into the brake light circuit.
Tachometer Wire (Tach Signal): Some systems require a tachometer signal to confirm that the engine is running after the remote start sequence. This wire senses the engine's RPM. Can also be handled with voltage sensing modernly.
Ignition, Accessory, and Starter Wires: These are the main power and control wires that need to be connected to the corresponding circuits in the vehicle's ignition harness.
Ground Wire: A solid, reliable ground connection is absolutely essential for proper operation.
Antenna: The antenna receives the signal from your remote. Placement is crucial for optimal range.

Key Specifications to Consider:

Voltage: Ensure the remote start module is compatible with your vehicle's voltage (typically 12V DC).
Current Draw: Check the current draw of the remote start module to ensure it won't overload any circuits.
Compatibility: Verify that the remote start system is compatible with your vehicle's make, model, and year. Some vehicles require specific interfaces or bypass modules.

Symbols: Decoding the Diagram

Understanding the symbols used in the wiring diagram is crucial for accurate installation. Here's a breakdown of common symbols:

Solid Lines: Represent wires. Thicker lines often indicate wires carrying higher current.
Dashed Lines: May represent optional connections or wires that are only present in certain vehicle configurations.
Colors: Wire colors are usually indicated by abbreviations (e.g., RED, BLU, GRN, YEL). Matching wire colors between the remote start harness and the vehicle's wiring is essential.
Circles or Dots: Indicate wire connections or splices.
Rectangles: Represent components like relays, switches, or modules.
Ground Symbol (Typically three descending horizontal lines): Indicates a ground connection to the vehicle's chassis.
Fuse Symbol (Often a wavy line enclosed in a rectangle): Represents a fuse for circuit protection.

Wire Color Codes: Familiarize yourself with common automotive wire color codes. For example:

RED: Typically indicates a constant 12V power source.
BLK (Black): Indicates ground.
YEL (Yellow): Often indicates ignition or accessory power.
BLU (Blue): Can be used for various functions, depending on the manufacturer.
GRN (Green): Often used for turn signals or other lighting circuits.

Pay close attention to the legend or key provided with the diagram, as it will explain any unique symbols or abbreviations used.

How It Works: The Remote Start Sequence

The remote start system works by mimicking the process of manually starting the vehicle with the key. Here's a simplified breakdown of the sequence:

Remote Activation: You press the start button on the remote transmitter.
Signal Reception: The remote start module receives the signal from the antenna.
Safety Checks: The module verifies that the hood is closed (via the hood pin switch) and that the brake pedal is not pressed (via the brake switch connection).
Ignition Activation: The module activates the ignition circuit, providing power to the vehicle's electrical system.
Accessory Activation: The module activates the accessory circuit, powering up the radio, climate control, and other accessories.
Starter Activation: The module engages the starter motor, cranking the engine until it starts.
Engine Run Verification: The module monitors the tachometer signal (or voltage) to confirm that the engine is running. If the engine doesn't start after a certain number of attempts, the module will stop the starting sequence.
Run Time: Once the engine is running, the module will keep it running for a pre-determined amount of time (typically 15-30 minutes).

Real-World Use: Basic Troubleshooting Tips

Even with careful installation, problems can sometimes arise. Here are a few basic troubleshooting tips:

Remote Start Doesn't Work At All: Check the fuses in the remote start module and the vehicle's fuse box. Verify that the hood pin switch is properly installed and functioning. Ensure that the ground connection is secure and making good contact with the chassis. Double-check all wire connections to ensure they are properly connected and insulated.
Engine Starts But Immediately Shuts Off: This could indicate a problem with the tachometer signal or voltage sense. Verify that the tach wire is properly connected and that the module is correctly programmed for your vehicle. Some vehicles require a data bypass module which may not be initialized properly.
Remote Start Works Intermittently: This could be due to a weak battery in the remote transmitter, poor antenna placement, or interference from other electronic devices. Try replacing the battery in the remote, repositioning the antenna, and testing the system in a different location.
Vehicle Starts But Accessories Don't Turn On: Double-check the accessory wire connection. Ensure that it's properly connected to the correct wire in the vehicle's ignition harness.

Remember: Always consult the remote start module's installation manual for specific troubleshooting instructions. If you're not comfortable troubleshooting electrical problems, it's best to consult a qualified technician.

Safety: Proceed with Caution!

Working with automotive electrical systems can be dangerous if you're not careful. Here are a few key safety precautions to keep in mind:

Disconnect the Battery: Always disconnect the negative terminal of the battery before working on any electrical circuits. This will prevent accidental short circuits and potential electrical shocks.
Use Proper Tools: Use high-quality crimping tools, wire strippers, and multimeters. Avoid using cheap tools that can damage wires or create unreliable connections.
Insulate Connections: Properly insulate all wire connections with electrical tape or heat shrink tubing to prevent short circuits.
Identify Wires Correctly: Use a multimeter to verify the function of each wire before making any connections. Never rely solely on wire color, as colors can vary between manufacturers.
Airbags: Be extremely careful when working near airbags. Accidental deployment can cause serious injury. Consult your vehicle's service manual for instructions on how to safely disable the airbag system.
High Current Circuits: The starter circuit carries a very high current. Ensure all connections are robust and properly insulated to prevent overheating and potential fires.

Disclaimer: This article is intended for informational purposes only and should not be considered a substitute for professional advice. If you're not comfortable working on automotive electrical systems, it's best to consult a qualified technician.

We have a sample remote start wiring diagram file available for download to help you visualize these concepts. This diagram provides a general overview and may need to be adapted to your specific vehicle and remote start system.