So, you're thinking about upgrading the sound system in your 2016 Toyota 86? Awesome! Swapping out the factory radio can breathe new life into your driving experience, giving you access to modern features like Apple CarPlay, Android Auto, Bluetooth, and a whole lot more sonic punch. But before you dive headfirst into installing that shiny new head unit, you need to understand the wiring. This guide will walk you through the process, ensuring you get everything connected correctly and avoid any electrical mishaps. Let's get started and turn your 86 into a rolling concert hall!
Why Bother Understanding the Wiring?
You might be tempted to just start snipping wires and hoping for the best, but trust me, that's a recipe for disaster. Knowing which wire does what is crucial for a successful installation. Incorrect wiring can lead to:
- Blown fuses: Overloading circuits can fry your car's electrical system.
- Damaged equipment: You could damage your new radio or even your car's computer.
- Non-functional speakers: No one wants a radio that doesn't play music.
- Electrical fires: In the worst-case scenario, incorrect wiring can cause a fire.
Taking the time to understand the wiring diagram and connections will save you time, money, and potential headaches in the long run. Plus, you'll feel a great sense of accomplishment when you successfully complete the installation yourself!
Gathering Your Tools and Materials
Before you even think about touching a wire, you need to gather the right tools and materials. This will make the process smoother and safer. Here's a list of essentials:
- New Head Unit: Of course! Choose one compatible with your 2016 Toyota 86.
- Wiring Harness Adapter: This is a MUST. It allows you to connect the new radio to your car's existing wiring without cutting any factory wires. Find one specifically designed for the 2016 Toyota 86.
- Dash Kit: This fills the gap around the new radio, giving it a clean, factory-installed look.
- Wire Strippers: For cleanly removing insulation from wires.
- Crimping Tool: To securely crimp connectors onto wires.
- Butt Connectors or Solder and Heat Shrink Tubing: For joining wires together. Butt connectors are easier for beginners, while soldering offers a more secure connection.
- Electrical Tape: For insulating connections.
- Multimeter: A valuable tool for testing voltage and continuity.
- Screwdrivers (Phillips and Flathead): For removing the dashboard panels and securing the radio.
- Panel Removal Tool (Optional but Recommended): Helps to avoid scratching your dashboard when removing panels.
- Wiring Diagram: We'll cover this in detail below!
- Gloves: For safety and to keep your hands clean.
- Safety Glasses: Protect your eyes from stray wire clippings.
- Flashlight or Headlamp: For better visibility in the dashboard.
Understanding the 2016 Toyota 86 Wiring Diagram
The wiring diagram is your roadmap for a successful installation. It shows you the color-coded wires and their corresponding functions. While the specific colors might vary slightly, the functions are generally consistent. Here's a breakdown of the common wires you'll encounter:
- Constant 12V (Battery): This wire provides constant power to the radio, even when the ignition is off. It's typically yellow. This is essential for the radio to retain its memory settings.
- Switched 12V (Ignition): This wire provides power to the radio when the ignition is turned on. It's typically red.
- Ground: This wire provides the return path for the electrical current. It's typically black.
- Illumination: This wire dims the radio's display when the headlights are turned on. It's typically orange or orange/white.
- Power Antenna (If Applicable): This wire extends the power antenna when the radio is turned on. It's typically blue. Since the 86 doesn't have a power antenna, this wire will often be unused.
- Remote Turn-On (Amplifier): This wire turns on an external amplifier when the radio is turned on. It's typically blue/white.
- Speaker Wires: These wires connect the radio to the speakers. There are four pairs, one for each speaker (front left, front right, rear left, rear right). Each pair consists of a positive (+) and a negative (-) wire. Speaker wires are often paired, and the positive wires often have a stripe.
Important Note: Always double-check the wiring diagram specific to your 2016 Toyota 86 and the aftermarket radio you've purchased. These diagrams are usually available online with a quick search or included with the radio.
Step-by-Step Installation Guide
Now that you have your tools, materials, and a solid understanding of the wiring, let's get to the installation.
Disconnect the Battery: This is the most important safety step. Disconnecting the negative terminal of the battery prevents any accidental shorts or electrical shocks.
Remove the Factory Radio: Use the panel removal tool or a flathead screwdriver (carefully!) to pry off the dashboard panels surrounding the radio. Locate the screws holding the radio in place and remove them. Gently pull the radio out of the dashboard.
Disconnect the Factory Wiring Harness: Disconnect the factory wiring harness from the back of the factory radio.
Connect the Wiring Harness Adapter: This is where the wiring harness adapter comes in. Connect the adapter to the factory wiring harness. Then, connect the adapter's wires to the corresponding wires on the aftermarket radio's harness. Use butt connectors or solder and heat shrink tubing to make secure connections. Pay close attention to the wiring diagram to ensure you're connecting the correct wires.
- Match the colors: The adapter wires are typically color-coded to match the aftermarket radio's wires.
- Double-check your connections: Before moving on, double-check all your connections to ensure they are secure and properly insulated.
Connect the Antenna Adapter: Connect the antenna adapter to the factory antenna cable and the aftermarket radio.
Test the Radio: Before reinstalling everything, reconnect the battery and test the radio. Make sure it powers on, plays music, and that all the speakers are working correctly. Test all the features, including Bluetooth, USB, and any other features your new radio offers.
Reinstall the Radio: Carefully slide the new radio into the dashboard opening. Secure it with the screws you removed earlier.
Reinstall the Dashboard Panels: Snap the dashboard panels back into place.
Reconnect the Battery: Reconnect the negative terminal of the battery.
Enjoy Your New Radio! Congratulations, you've successfully installed a new radio in your 2016 Toyota 86!
Troubleshooting Common Issues
Even with careful planning, you might encounter some issues during the installation process. Here are a few common problems and how to troubleshoot them:
Radio Won't Turn On:
- Check the fuses: Make sure the radio fuse and the car's accessory fuse are not blown.
- Verify the connections: Ensure the constant 12V, switched 12V, and ground wires are properly connected.
- Test the voltage: Use a multimeter to check the voltage at the constant 12V and switched 12V wires. You should see approximately 12 volts.
No Sound from Speakers:
- Check the speaker wire connections: Make sure the speaker wires are properly connected to the radio and the speakers.
- Verify the speaker polarity: Ensure the positive and negative wires are connected correctly.
- Check the speaker impedance: Make sure the radio's speaker impedance matches the speakers' impedance.
Radio Loses Memory Settings:
- Check the constant 12V connection: Ensure the constant 12V wire is properly connected and receiving power even when the ignition is off.
Dimmer Not Working:
- Check the illumination wire connection: Make sure the illumination wire is properly connected to the radio and the car's headlight circuit.
Frequently Asked Questions
- Do I really need a wiring harness adapter? Yes, absolutely. It prevents you from cutting factory wires, which can damage your car's electrical system and void your warranty.
- What if the colors on my adapter don't match the radio's wires? Use the wiring diagrams for both the adapter and the radio to identify the function of each wire, regardless of color.
- Can I install an amplifier with my new radio? Yes, you can. Connect the radio's remote turn-on wire to the amplifier's remote turn-on input.
- How do I find the wiring diagram for my specific car? Search online for "2016 Toyota 86 radio wiring diagram" or check the documentation that came with your new head unit.
- What if I'm not comfortable doing this myself? If you're unsure about any part of the installation process, it's best to consult a professional car audio installer.
Conclusion
Upgrading the radio in your 2016 Toyota 86 can significantly enhance your driving experience. By understanding the wiring and following these steps, you can confidently tackle this project and enjoy a new level of sound and functionality in your ride. Remember to double-check your connections and consult a professional if you're unsure about anything.