Ao Smith 100351312 Main Wiring Harness

Product Description

The AO SMITH 100351312 is a main wiring harness designed to route and organize electrical connections within a water heater system. This harness consolidates multiple electrical circuits into a single, managed assembly, ensuring reliable signal and power distribution between components such as control boards, sensors, and ignition modules. It is a direct-replacement part intended for installation by licensed plumbers or qualified water heater service technicians familiar with low-voltage wiring and appliance electrical systems.

This wiring harness is used in residential or light-commercial water heater applications where the original harness has become damaged, corroded, or faulty. It is suited for installations requiring an OEM-style replacement to restore proper electrical function to the heater's control system. Technicians replacing this part typically do so during control board service, full unit reconditioning, or troubleshooting of intermittent electrical faults.

Key Features

• Main wiring harness consolidates multiple electrical circuits into one organized assembly
• OEM-style replacement designed to restore original electrical routing and connectivity
• Supports reliable signal distribution between control components, sensors, and ignition systems
• Engineered for direct fitment without modification to existing harness routing

Compatibility

Designed as an OEM-style replacement main wiring harness for AO SMITH water heater systems. No specific model compatibility data was provided in the product input.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater service technician. Before beginning work, disconnect power to the unit at the breaker and allow all components to fully de-energize. Inspect all connector terminals and routing clips during installation to ensure a secure, undamaged fit. Follow applicable local codes and the manufacturer service documentation throughout the procedure.

Technical Specifications

• Component Type: Main Wiring Harness

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100351312