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The genuine Goodman B1225020 Wiring Harness is a factory-original electrical assembly made for the Goodman WGHP4360AAA heat pump. It delivers pre-terminated, correctly gauged conductors with the exact connectors your unit expects, replacing brittle, melted, or chafed wiring that can cause intermittent faults and no-start conditions.
This OEM harness arrives with the right wire gauge, lead lengths, and plug-in connectors, so it drops in without splicing or crimping custom terminals. Building a replacement from generic wire risks incorrect gauge, loose connections, and time-consuming troubleshooting. The factory harness restores a clean, code-correct connection in minutes.
Easy to Moderate — Most harnesses are a plug-and-play swap once power is disconnected: unplug the old harness, route the new one along the same path, and reconnect each labeled connector. Photograph the original routing before removal. We recommend a qualified technician verify connections before restoring power.