{"product_id":"oem-goodman-5-pin-wiring-harness-for-gmn120-5-furnace-b1378701","title":"OEM Goodman 5-Pin Wiring Harness for GMN120-5 Furnace — B1378701","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1378701 5-Pin Wiring Harness\u003c\/strong\u003e is a genuine OEM replacement for \u003cstrong\u003eGMN120-5\u003c\/strong\u003e series gas furnaces. This compact factory-terminated harness links a furnace subassembly to the control circuit. If you're chasing an intermittent fault, a no-heat call, or you've found corroded or heat-damaged pins, a fresh harness restores a solid electrical path.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1378701\u003c\/li\u003e\n\u003cli\u003eConnector: 5-Pin\u003c\/li\u003e\n\u003cli\u003eType: Wiring Harness\u003c\/li\u003e\n\u003cli\u003eCompatible Model: Goodman GMN120-5\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas Furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine Goodman OEM harness\u003c\/strong\u003e ships with the exact keyed 5-pin connector and correct wire gauge pre-terminated. Generic substitutes usually mean cutting and splicing — extra work that adds resistance and potential failure points. OEM drops in clean and keeps your furnace's diagnostics trustworthy.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e One of the simpler electrical repairs. Shut off power at the breaker, unplug the keyed 5-pin connector at each end, route the new harness the same way, and reconnect. Allow 15 minutes.\u003c\/p\u003e\u003cp\u003eBacked by our fit guarantee. Questions? Contact info@nationalhvacparts.com.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058126799219,"sku":"GOODMAN-11592","price":11.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-5-pin-wiring-harness-for-gmn120-5-furnace-b1378701","provider":"National HVAC Parts","version":"1.0","type":"link"}