York S1-025-49721-000 Wiring Harness

The York S1-025-49721-000 Wiring Harness is a heavy-duty electrical component essential for service technicians maintaining York and Johnson Controls HVAC systems. This 132-inch long motor wiring harness provides the critical reach necessary for large-chassis air handlers and furnace configurations where the blower motor is positioned a significant distance from the control board. Engineered as a genuine OEM replacement part, this assembly ensures factory-spec signal integrity and current delivery. It is the direct functional successor to the discontinued S1-025-38603-000, allowing for a seamless drop-in installation without the risks associated with field-splicing or manual pin resets. When troubleshooting intermittent motor faults or communication errors, installing a dedicated York HVAC wiring harness restores circuit reliability and protects sensitive electronic control modules from resistance-related failures. This harness features high-temp insulation and pre-terminated connectors designed to withstand the vibration and thermal stress typical of high-static pressure applications.

Key Benefits

• Extended 132-Inch Length: Offers maximum versatility for routing cables through large residential and light commercial cabinets.
• Legacy Cross-Compatibility: Specially designed as the factory-authorized replacement for the older York replacement wiring harness part S1-025-38603-000.
• Reliable Termination: Factory-pressed connectors ensure low-resistance contact points, preventing terminal arcing and heat buildup.
• Optimized Signal Integrity: Maintains the specific wire gauge and shielding necessary for modern ECM and PSC motor communication.

Common Technical Questions

Which motor types are compatible with the S1-025-49721-000?
This harness is typically utilized for York blower motors and outdoor fan motor assemblies that require a standard multi-pin molex or spade connection across a long lead distance.

Is this harness suitable for high-voltage applications?
Yes, the insulation and wire gauge are rated for standard HVAC internal voltages, but always verify the voltage requirements on your unit’s specific wiring schematic before installation.

What should I do if the 132-inch length is significantly longer than my original part?
While this provides extra lead, it is a direct replacement for the S1-025-38603-000. Any excess slack should be coiled and secured with high-temperature zip ties away from moving parts or heat exchangers.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.