{"product_id":"oem-goodman-16-pin-wiring-harness-for-gmp050-3-furnace-b1378700","title":"OEM Goodman 16-Pin Wiring Harness for GMP050-3 Furnace — B1378700","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1378700 16-Pin Wiring Harness\u003c\/strong\u003e is a genuine OEM replacement connector assembly engineered for the \u003cstrong\u003eGoodman GMP050-3\u003c\/strong\u003e gas furnace. This 16-pin main harness carries low-voltage control and blower signals between the integrated furnace control board and the furnace's key components. Over years of thermal cycling, harness connectors can crack, corrode, or develop intermittent contact — causing no-heat calls, blower faults, or erratic control-board behavior. Installing the correct factory harness restores clean, reliable connections.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnector type: 16-pin main wiring harness\u003c\/li\u003e\n\u003cli\u003eCompatible model: Goodman GMP050-3 gas furnace\u003c\/li\u003e\n\u003cli\u003eOEM part number: B1378700\u003c\/li\u003e\n\u003cli\u003eApplication: low-voltage control \/ blower circuit\u003c\/li\u003e\n\u003cli\u003eFitment: direct-fit factory replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur genuine OEM Goodman harness uses the exact pin count, connector keying, and wire gauge specified by the factory, guaranteeing a plug-and-play fit. Generic harnesses often require splicing, re-pinning, or manual crimping, which introduces failure points and can void equipment warranties. For a mission-critical control connection, OEM is the safe choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate.\u003c\/strong\u003e Replacement requires disconnecting power, accessing the control area, and carefully transferring or matching connectors pin-for-pin. Best performed by an HVAC technician or a confident DIYer comfortable working around furnace wiring. Always shut off electrical and gas supply before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058134368627,"sku":"GOODMAN-11830","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-16-pin-wiring-harness-for-gmp050-3-furnace-b1378700","provider":"National HVAC Parts","version":"1.0","type":"link"}