Upgrading your Acura NSX with a modern Pioneer head unit can significantly enhance your driving experience. However, navigating the wiring can seem daunting. This guide provides a clear Pioneer Radio Wiring Schematic tailored for your NSX, ensuring a smooth installation process. We break down the connections, compatibility, and address common issues you might encounter.
Understanding the Wiring Diagram for NSX and Pioneer Head Units
The following table details the pioneer radio wiring schematic specifically designed for connecting a Pioneer head unit, such as the AVIC-8100NEX, to your NSX using the SoS ipp-758 harness. This schematic ensures compatibility and simplifies the wiring process by clearly outlining each connection point.
| Terminal (NSX 16P Connector) | Wire Color (NSX) | Connects To (NSX Function) | SoS ipp-758 Wire Color | Pioneer AVIC-8100NEX Wire Color & Function |
|---|---|---|---|---|
| A1 | WHT | Passenger’s door speaker amp + | Red RCA-Male (gray wire “Right Front+” ) | Front Right RCA-Female |
| A2 | WHT | Driver’s door speaker amp+ | Black RCA-Male (white wire “Left Front +”) | Front Left RCA-Female |
| A3 | Red/Blk | Lights-on signal (dash and console lights) | ORANGE (“Dash light illumination”) | Orange/White – pwr cord #1 (page 8) (Dash light illumination) |
| A4 | wht/yel | Constant power | YELLOW (“battery/constant 12v+”) | Yellow – pwr cord #1 (page 8) (Battery/constant 12V+) |
| A5 | Yel/Red | ACC (II) main stereo power | RED (“ignition switch 12v+”) | Red – pwr cord #1 (page 8) (Ignition switch 12V+) |
| A6 | Pnk/wht | Radio switch pwr (to antenna & relay) | BLUE (“power antenna”) | Blue/White(System Remote Control) – pwr cord #1 (page 9) (System remote control or power antenna relay) |
| A7 | WHT | Driver Foot well base speaker (+) | Black RCA-Male (green wire “Left Rear +”) | Left Rear RCA-Female |
| A8 | WHT | Passenger foot well base speaker (+) | Red RCA-Male (Purple wire “Right Rear +”) | Right Rear RCA-Female |
| A9 | ORN | Passenger door speaker amp (-) | Red RCA-Male (gray blk wire “Right Front -”) | Right Front RCA-Female |
| A10 | ORN | Driver door speaker amp (-) | Black RCA-Male (white blk wire “Left front -”) | Left Front RCA-Female |
| A11 | Orn/wht | cell phone mute signal (not applicable) | empty | N/A |
| A12 | blk/brn | Security (IN) – (NSX Security control Unit) | empty | N/A |
| A13 | blk/lt grn | Security ground (G404) | empty | N/A |
| A14 | blk | Ground | Black (“Chassis Ground 12V-”) | Black – pwr cord #1 (page 8) (Chassis Ground 12V-) |
| A15 | ORN | Driver Foot well speakers (-) | Black RCA-Male (green/blk wire “Left Rear -”) | Left Rear RCA-Female |
| A16 | ORN | Passenger foot well speaker(-) | Red RCA-Male (purple/blk wire “Right Rear – “) | Right Rear RCA-Female |
Addressing Common Installation Challenges
While the wiring schematic simplifies the connection process, installers sometimes face additional hurdles. Here are a few common issues reported by users and potential considerations:
Turn On/Off Thump and Hissing Noises
Some users have reported experiencing an annoying thump sound when turning the Pioneer head unit on or off, accompanied by hissing from the speakers, which was absent with the original OEM unit. While noise isolators like PAC SNI-1 can attenuate these noises, they might not eliminate them entirely. The root cause could stem from grounding issues or impedance mismatches. Double-checking the Pioneer head unit’s chassis ground connection is crucial. Further investigation into potential ground loops or compatibility issues with the NSX’s amplifier system might be necessary for a complete resolution.
Mounting Bracket Compatibility
Fitting the new Pioneer head unit into the NSX console can present mounting challenges. Simply stuffing the unit into the slot without a proper bracket isn’t ideal. The SoS 2DIN mounting bracket, in some cases, might not be a perfect fit. Exploring alternative mounting plates designed for double DIN units might be necessary to securely hold the head unit in place within the NSX center console.
Cutting the Double DIN Slot in the SoS Center Console
For those using an SoS center console, creating a double DIN slot might be required. A Dremel tool is often considered for this task. However, caution is advised to prevent cracking the console material during the cutting process. Gradual and careful cutting is recommended to achieve a clean and properly sized opening.
Aspirator Fan Mount
The SoS center console might not include a mount for the aspirator fan, a component that appears to be important. Installers need to devise solutions for mounting this fan, as it’s often considered necessary for the NSX’s climate control system to function optimally. Exploring custom mounting solutions or adapting existing brackets might be required.
Integrating Ports into the Ashtray Slot
Creative installers often look for ways to integrate the Pioneer head unit’s ports (USB, HDMI, Microphone, AUX) discreetly. Utilizing the ashtray slot is a popular idea. This often involves creating a custom faceplate and mounting bracket to neatly house the ports within the ashtray compartment, maintaining a clean and functional interior aesthetic.
Conclusion
This pioneer radio wiring schematic serves as a valuable resource for anyone looking to install a Pioneer head unit in their NSX. By understanding the wiring and being prepared for potential installation challenges, you can achieve a successful upgrade and enjoy enhanced audio and modern features in your classic sports car. Remember to always double-check connections and consult professional resources if needed during your installation.
