Infiniti Widescreen Android Display Wiring Diagram & Harness Guide (High/Low Spec & QX30)
Introduction
Upgrading your Infiniti with a modern horizontal widescreen Android display gives the interior a sleek, contemporary feel similar to late-model luxury vehicles. However, integrating these screens requires proper communication with Infiniti’s complex factory electronics, CAN-bus data networks, and climate control gateways.
Why does the exact same Infiniti model have different head units?
Depending on the model year, trim level (Navigation vs. Non-Navigation, Bose® vs. Standard Audio), and specific platform (G/Q series vs. QX30), Infiniti utilized four distinct horizontal wiring architecture standards:
- High-Spec Navigation Systems: Features full digital video signal integration, OEM AUX lines, backup camera triggers, and dedicated CAN-bus protocol interfaces.
- QX30 Dedicated Architecture: Engineered specifically for the Infiniti QX30 platform, incorporating independent button lines, radio antenna adapters, and unique climate control wiring.
- Low-Spec Systems (Type A & B): Designed for non-nav trims, featuring passthrough harnesses for factory radios and screen displays across two distinct rear port configurations.
- Universal Requirement (AC Control Module Retention): Across all high and low-spec configurations, the white factory AC control module must remain reconnected and retained inside the dash.
1. High-Spec Wiring Harness Guide
The High-Spec harness set is engineered for premium Infiniti G/Q models equipped with factory navigation and Bose® audio systems.
- Main Power & Radio Connections: Connects to the main power plug on the rear of the OEM head unit, supplying system power (+12V, ACC, Ground) to the new screen.
- CAN-Bus Decoder Interface: Decodes vehicle data protocols to retain factory steering wheel controls, reverse gear triggers, and vehicle telemetry.
- AUX Audio Input & Reverse Camera Harness: Routes factory AUX audio feeds into the display and retains the OEM backup camera video feed.
- Radio Antenna Adapter: Plug-and-play adapter to maintain clear AM/FM radio reception.
Important Notice: Reinstall and reconnect the white factory AC control box behind the dash. Disconnecting this module will cause the climate control system to stop functioning.
2. QX30 Wiring Harness Guide
The QX30 harness set is dedicated exclusively to the Infiniti QX30 platform, accommodating its unique electronic control modules and dash architecture.
- Main Power Harness: Interfaces directly with the QX30 main factory radio unit.
- CAN Line: Communicates with the vehicle's CAN-bus network for steering wheel controls and system triggers.
- Button Harness: Connects to the physical console button cluster to retain quick-access menu controls.
- AC Line & Radio Antenna Adapter: Connects to the climate system data line and retains factory radio reception.
- Factory Display Connectors: Plugs directly into the OEM display harness for clean video signal passthrough.
Important Notice: The factory white AC control module must be reconnected and retained in the dash during installation.
3. Low-Spec Wiring Harness Guide - Type A
The Low-Spec (Type A) harness set fits base non-navigation Infiniti models featuring the standard single or dual-screen factory setup.
- Main Power Plug: Plugs into the primary harness port on the rear of the non-nav factory head unit.
- Direct Connector Match (Plug Passthrough): Connects into the dedicated socket on the lower section of the factory radio to maintain system loop integrity.
- CAN Line & Rear Camera Input: Feeds wheel controls, reverse gear status, and OEM rear-view video signals directly into the new display screen.
- Radio Antenna Adapter: Adapts the factory antenna plug to the aftermarket unit.
- Factory Display Plug: Plugs into the single rear port of the original screen unit.
Important Notice: Reinstall the factory white AC box back into the vehicle dash to preserve full climate control functionality.
4. Low-Spec Wiring Harness Guide - Type B
The Low-Spec (Type B) harness set accommodates non-nav Infiniti models equipped with an alternate factory head unit and display port configuration.
- Main Power Harness & CAN Line: Connects to the main power port of the head unit and decodes CAN data signals for steering wheel buttons and reverse triggers.
- Air Conditioning Module Plug: Connects to the secondary AC gateway line located on the head unit assembly.
- Rear Camera Lead & Antenna Adapter: Routes original reverse camera feeds and radio signal input into the new unit.
- Factory Display Plug: Interfaces with the rear connector socket on Type B original screens.
Important Notice: The white AC control module must be plugged back in and safely mounted inside the dashboard.
Frequently Asked Questions
Why must the factory white AC box be reinstalled?
The white climate control box acts as a central communication gateway on Infiniti's CAN-bus network. Removing it breaks the signal loop, causing the climate control system to stop working and potentially triggering diagnostic fault codes on the gauge cluster.
How do I know if I need a High-Spec or Low-Spec harness?
High-spec models typically include factory GPS navigation, a center console control dial with a "NAV" button, and a Bose® premium sound system. Low-spec models lack factory navigation controls and feature simpler radio backplates.
Will my factory backup camera and Bose® amplifier still work?
Yes. All Roadnavier widescreen wiring harnesses include integrated CAN-bus decoders and low-level audio lines that retain your original backup camera, steering wheel control buttons, and factory Bose® amplifier remote turn-on functionality.