{"product_id":"oem-goodman-wiring-harness-for-gmt090-4-furnace-b1225020","title":"OEM Goodman Wiring Harness for GMT090-4 Furnace — B1225020","description":"\u003ch2\u003eGoodman B1225020 Wiring Harness\u003c\/h2\u003e\u003cp\u003eThe Goodman B1225020 is a genuine OEM wiring harness engineered as a direct-fit replacement for \u003cstrong\u003eGMT090-4\u003c\/strong\u003e gas furnaces. Over years of heating cycles, factory wiring can suffer from insulation cracking, connector corrosion, and heat fatigue near the burner and control board. This harness restores clean, reliable electrical connections between the control board, gas valve, igniter, and safety switches so your furnace fires and sequences correctly.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenuine Goodman OEM part number: B1225020\u003c\/li\u003e\n\u003cli\u003eCompatible equipment: GMT090-4 gas furnace\u003c\/li\u003e\n\u003cli\u003ePre-terminated, color-coded conductors with factory connectors\u003c\/li\u003e\n\u003cli\u003eHigh-temperature insulation rated for furnace cabinet service\u003c\/li\u003e\n\u003cli\u003ePlug-and-play — no splicing or crimping required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is the \u003cstrong\u003egenuine Goodman OEM harness\u003c\/strong\u003e, built to the exact conductor gauge, connector pinout, and length the furnace was designed around. Generic or hand-built harnesses often use undersized wire and loose connectors that can cause intermittent faults, nuisance lockouts, or overheating. Choosing OEM guarantees a factory-correct fit and protects your control board warranty.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate.\u003c\/strong\u003e Replacement is a plug-for-plug swap, but it requires photographing the original routing, disconnecting power at the breaker, and confirming each connector lands on the correct terminal. Most experienced DIYers finish in 30–45 minutes; if you are unsure of the wiring diagram, have an HVAC technician perform the swap.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eAlways disconnect power before servicing. Verify the part number against your unit's rating plate before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058159141235,"sku":"GOODMAN-12370","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-wiring-harness-for-gmt090-4-furnace-b1225020","provider":"National HVAC Parts","version":"1.0","type":"link"}