{"product_id":"oem-goodman-5-pin-wiring-harness-for-gmn080-4-b1378701","title":"OEM Goodman 5-Pin Wiring Harness for GMN080-4 — B1378701","description":"\u003ch2\u003eGoodman B1378701 5-Pin Wiring Harness\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman B1378701\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003e5-pin wiring harness\u003c\/strong\u003e designed for the \u003cstrong\u003eGMN080-4\u003c\/strong\u003e gas furnace. This plug-in harness carries low-voltage and control signals between furnace components — typically the control board and a downstream device — using a keyed 5-position connector so it seats in one orientation and can't be miswired. Over time, harness connectors can corrode, melt near heat, or develop intermittent connections that cause erratic furnace behavior, dropped signals, or no-heat faults. A fresh OEM harness restores clean, reliable connections.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e B1378701\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 5-pin keyed plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Furnace control\/low-voltage harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMN080-4 furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e Gas furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Direct OEM plug-in replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM\u003c\/strong\u003e B1378701 arrives pre-terminated with the correct connector housing, pinout, and wire gauge — plug in and go. A \u003cstrong\u003egeneric\u003c\/strong\u003e alternative usually means loose crimp terminals you assemble yourself, with real risk of a wrong pin position or a poor crimp that causes intermittent faults. For a component this inexpensive, OEM is the clear choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eVery Easy (1\/5).\u003c\/strong\u003e Fully plug-and-play — usually under 10 minutes. Cut power at the furnace switch, unplug the old harness, route the new one along the same path, and click it into place. No stripping, crimping, or tools required for a standard swap.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058126143859,"sku":"GOODMAN-11567","price":11.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-5-pin-wiring-harness-for-gmn080-4-b1378701","provider":"National HVAC Parts","version":"1.0","type":"link"}