{"product_id":"oem-goodman-5-pin-wiring-harness-for-gmp050-3-furnace-b1378701","title":"OEM Goodman 5-Pin Wiring Harness for GMP050-3 Furnace — B1378701","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1378701 5-Pin Wiring Harness\u003c\/strong\u003e is a genuine OEM connector assembly built for the \u003cstrong\u003eGoodman GMP050-3\u003c\/strong\u003e gas furnace. This 5-pin harness links a dedicated sub-circuit — such as the igniter, gas valve, or limit string — to the furnace control system. A degraded or loose harness is a common hidden cause of ignition faults and intermittent shutdowns, and replacing it with the factory part eliminates flaky connections at the source.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnector type: 5-pin wiring harness\u003c\/li\u003e\n\u003cli\u003eCompatible model: Goodman GMP050-3 gas furnace\u003c\/li\u003e\n\u003cli\u003eOEM part number: B1378701\u003c\/li\u003e\n\u003cli\u003eApplication: dedicated furnace control sub-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\u003eThe genuine Goodman harness matches the exact connector keying, pin spacing, and wire colors of the original, so it drops straight in with no guesswork. Aftermarket alternatives frequently demand hand-splicing that can loosen over time and create resistance-driven heat. For dependable, code-compliant service, OEM wins.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate.\u003c\/strong\u003e With power and gas off, unplug the failed harness and snap the replacement into place, matching each connector. A basic tool kit and a service diagram are all that's typically required — a great option for a competent DIYer or professional tech.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058134434163,"sku":"GOODMAN-11831","price":11.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-5-pin-wiring-harness-for-gmp050-3-furnace-b1378701","provider":"National HVAC Parts","version":"1.0","type":"link"}