Lennox 15K88 Wiring Harness

For field technicians and contractors maintaining Lennox furnace systems, the Lennox 15K88 Wiring Harness is a critical OEM component for restoring the Ign Control Upper signal path. This specific harness facilitates the high-integrity electrical connection between the ignition control module and the upper internal components, ensuring precise liquid line pressure monitoring and signal transmission for heating cycles. In the field, having the exact match is vital for avoiding communication faults; the 15K88 is identical to 15K8801, offering a direct-fit replacement that eliminates the risk of terminal mismatching or improper resistance. Engineered for high-temperature furnace vestibules, this Lennox replacement part ensures the SureLight ignition control or similar integrated boards receive reliable power and data, maintaining the efficiency of residential heating systems. Whether you are performing a routine control board swap or a complex repair on an 80MGF or G24M unit, using 100% compatible HVAC wiring components is the only way to ensure the system operates within its original factory specifications.

• OEM Compatibility: Specifically engineered for Lennox furnaces and compatible with models referencing part numbers 15K88 and 15K8801.
• Direct-Fit Connector: Features factory-crimped terminals designed to mate perfectly with the Ign Control Upper pins, reducing installation time and preventing loose connections.
• Durable Insulation: Built to withstand the thermal stressors found in the furnace burner compartment, ensuring long-term signal stability.
• System Synchronization: Optimizes communication between the ignition control and the rest of the HVAC equipment to prevent unintended lockouts.

• Is the 15K88 compatible with the 15K8801 harness? Yes, these two part numbers are technically identical and can be used interchangeably in all specified Lennox applications.
• Where does this harness connect in the furnace? This is the upper wiring harness, typically connecting the 12-pin or 9-pin ignition control module to the upper vestibule components.
• Can I use this for non-Lennox brands? While some Allied or Armstrong units share platforms, we strongly recommend verifying the specific Lennox part number in your unit’s service manual before installation.

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.