{"product_id":"oem-goodman-16-pin-wiring-harness-for-gmnt040-3-b1378700","title":"OEM Goodman 16-Pin Wiring Harness for GMNT040-3 — B1378700","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1378700 16-Pin Wiring Harness\u003c\/strong\u003e is a genuine OEM plug-and-play wiring assembly for the Goodman\/Amana \u003cstrong\u003eGMNT040-3\u003c\/strong\u003e gas furnace. This 16-circuit harness carries low- and line-voltage connections between the integrated furnace control board and key components — replacing brittle, melted, or rodent-damaged wiring with a factory-terminated loom that drops right in.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 16-pin keyed plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Factory-terminated furnace control wiring harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductors:\u003c\/strong\u003e Color-coded, correct-gauge OEM wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1378700\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana GMNT040-3 and compatible furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis genuine harness uses the correct keyed connector, wire gauge, and pin-out so it seats and functions exactly as designed. Building a substitute from bulk wire risks miswiring, poor crimps, and intermittent faults on safety circuits. For control wiring, OEM is the reliable choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — keyed connectors make this largely plug-and-play. Disconnect power first, photograph the existing routing, and unplug\/replug each connector one at a time to avoid cross-connections. No stripping or crimping required.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058127225203,"sku":"GOODMAN-11608","price":34.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-16-pin-wiring-harness-for-gmnt040-3-b1378700","provider":"National HVAC Parts","version":"1.0","type":"link"}