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The Goodman B1225020 Wiring Harness is the genuine OEM harness for the ASH130601A 13 SEER, 5-ton heat pump. It provides the pre-terminated, factory-routed connections between control components in the outdoor unit — eliminating guesswork and ensuring every conductor lands on the correct terminal. Cracked insulation, melted connectors, or corroded spade terminals on the original harness can cause erratic operation or no-start conditions.
An OEM Goodman harness arrives with the exact wire colors, lengths, and connector types your unit expects — no cutting, crimping, or splicing. Building a harness from generic wire risks miswiring and voids reliability guarantees.
Easy to Moderate — Disconnect power, photograph the existing routing, and unplug/re-plug each connector to match. Because the harness is pre-made, most installs take 20–30 minutes. Take reference photos before removing the old harness.