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The Goodman B1225020 is a genuine OEM wiring harness assembled for the ASZ130301AB heat pump. This pre-terminated harness delivers the factory-correct connections between the control board, contactor, capacitor, and field terminals, with the right gauge wire, insulation rating, and connector types already crimped in place. Replacing a burned, brittle, or rodent-damaged harness with the OEM part eliminates guesswork and the risk of miswiring during a repair.
The B1225020 arrives with every connector in the correct position and every lead cut to length, so it drops into the ASZ130301AB exactly as the original did. Building a harness from bulk wire and spade terminals invites polarity mistakes, loose crimps, and heat-related failures. The OEM harness ensures correct terminations and preserves equipment warranty.
Difficulty: Moderate. With power disconnected, photograph the existing connections, unplug the old harness one lead at a time, and transfer the new harness connector-for-connector — roughly 30–45 minutes. Working methodically prevents crossed leads. A licensed technician is recommended if you are not confident tracing control wiring.
Restore clean, factory-correct wiring with genuine Goodman parts. Order the B1225020 harness today.