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The Goodman B1225020 is a genuine OEM wiring harness engineered for the ASZ130301AC 13 SEER, 2.5-ton (30,000 BTU) heat pump condenser and compatible Goodman/Amana units. This pre-terminated harness carries the control and low-voltage connections between the defrost board, contactor, sensors, and terminal block, with factory-crimped connectors and correct wire gauge and color coding. Replacing a burned, chewed, corroded, or brittle harness restores reliable connections and eliminates intermittent faults caused by loose or damaged wiring.
The OEM harness is molded and terminated to plug directly into the ASZ130301AC's board and components — no splicing, no guesswork. Building a harness from generic wire risks wrong gauge, poor crimps, and mismatched connectors that lead to voltage drop, arcing, or shorts. For factory-correct connections, the OEM harness installs cleanly and safely.
Moderate (3/5). Photograph and label all connections first. Disconnect power at the breaker, unplug the old harness one connector at a time, and route the replacement identically. If unsure of routing, consult the unit's wiring diagram or an HVAC technician.
Always disconnect power before servicing HVAC equipment.