AEM Power Harness for 30-0300 X-Series Wideband Gauge

AEM Power Harness for 30-0300 X-Series Wideband Gauge | Part # 30-3459

Buy the OEM replacement AEM Power & I/O Harness (PN 30-3459) for the 30-0300 X-Series Wideband UEGO Gauge. Features color-coded wiring for power, ground, 0-5V, CAN bus, and RS-232.

The AEM Replacement Power & I/O Harness (Part # 30-3459) is engineered specifically for the AEM 30-0300 X-Series Wideband UEGO Air/Fuel Ratio Gauge. This 10-pin primary wiring assembly provides power, grounding, and multi-channel data outputs needed for engine tuning, standalone ECU interfacing, and data logging.

Manufactured with factory-grade automotive wiring, heat-resistant insulation, and a pre-terminated locking connector, this harness delivers clear signal transmission while protecting against engine bay heat and vibration. Whether replacing a damaged original harness or setting up a clean wiring layout in a new vehicle build, this harness ensures complete compatibility with AEM’s X-Digital platform.

Best Uses

1. Direct OEM Replacement: Ideal for replacing lost, cut, or damaged primary power and I/O wiring on an existing AEM 30-0300 X-Series Gauge setup.
2. Standalone ECU Integration: Connects the wideband’s 0-5V analog output or CAN bus signal directly to aftermarket ECUs (e.g., AEM Infinity, Haltech, Link, Megasquirt) for closed-loop fuel control.
3. Data Logging Setup: Sends real-time AFR/Lambda telemetry to external loggers via RS-232 serial or AEMnet (CAN bus) output channels.
4. Multi-Vehicle Swaps & Rebuilds: Simplifies moving an X-Series wideband gauge into a new chassis without pulling out existing hardwired loom runs.

Features

1. Multi-Protocol Data Support: Integrates dedicated outputs for 0-5V Analog, AEMnet (CAN bus), and Serial RS-232 communication channels.
2. Factory-Standard Color Coding: Uses standardized color-coded wire leads to match the official AEM 30-0300 wiring diagram.
3. Locking 10-Pin Connector: Snaps securely into the back of the X-Series gauge body to prevent accidental disconnection from vibration or strain.
4. Automotive-Grade Shielded Wire: Built with high-temp insulation and flexible lead lengths to reach chassis power sources and engine bays easily.
5. Plug-and-Play Compatibility: Directly pin-matched to the internal controller architecture of the 30-0300 X-Series UEGO unit.

Benefits

1. Accurate Tuning Data: Clean ground and signal channels reduce voltage offsets, ensuring precise 0-5V analog readings at the ECU.
2. Fast & Simple Installation: Color-coded leads reduce installation time and minimize the risk of cross-wiring or blown fuses.
3. Versatile System Integration: Supports multiple communication methods simultaneously, letting you power a display gauge while sending data to an ECU and a logger.
4. Reliable Under Race Conditions: Locking connections and durable wire sheathing prevent intermittent power dropouts during severe engine vibration or high g-forces.
5. Restores Factory Functionality: Serves as an exact factory-spec component (PN 30-3459) to restore original performance without modifying the gauge housing.