{"product_id":"oem-goodman-12-pin-wiring-harness-for-gmt140-5-furnace-0259f00007p","title":"OEM Goodman 12-Pin Wiring Harness for GMT140-5 Furnace — 0259F00007P","description":"\u003cp\u003eThe OEM Goodman \u003cstrong\u003e0259F00007P\u003c\/strong\u003e 12-pin wiring harness is a direct-fit replacement for \u003cstrong\u003eGMT140-5\u003c\/strong\u003e gas furnaces. It carries the low-voltage and control signals between the integrated furnace control board and the furnace components, using factory-keyed connectors so there is no guesswork during installation. Replacing a burned, chafed, or corroded harness restores reliable communication and clears intermittent no-heat faults.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnector: 12-pin, factory keyed\u003c\/li\u003e\n\u003cli\u003eFunction: Control board \/ component interconnect harness\u003c\/li\u003e\n\u003cli\u003eWiring: Color-coded OEM conductors with crimped terminals\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMT140-5 furnace\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 0259F00007P\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine Goodman harness uses the correct pin-out, wire gauge, and connector housing so it seats fully into the control board on the first try. Generic or hand-built harnesses risk mismatched pin assignments and loose terminals that lead to erratic operation or melted connectors. For control wiring, OEM is the safe choice.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (3\/5)\u003c\/strong\u003e — Power down the furnace, photograph the existing connections, then unplug the keyed connectors and route the new harness along the same path. Plan for 20–30 minutes. Take care to seat every connector fully until it clicks.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058162909555,"sku":"GOODMAN-12461","price":29.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-12-pin-wiring-harness-for-gmt140-5-furnace-0259f00007p","provider":"National HVAC Parts","version":"1.0","type":"link"}