{"product_id":"oem-goodman-12-pin-wiring-harness-for-gmth045-3-0259f00007p","title":"OEM Goodman 12-Pin Wiring Harness for GMTH045-3 — 0259F00007P","description":"\u003ch2\u003eGoodman 0259F00007P 12-Pin Wiring Harness\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e0259F00007P\u003c\/strong\u003e is a genuine OEM 12-pin wiring harness engineered for \u003cstrong\u003eGMTH045-3\u003c\/strong\u003e gas furnaces. This factory connector routes low-voltage control signals between the integrated furnace control board and key components such as the gas valve, blower, and safety circuit. A cracked, melted, or corroded harness is a common cause of intermittent no-heat calls and error codes — replacing it with the exact OEM part restores reliable, code-compliant operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eConnector: 12-pin molded plug\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 0259F00007P\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMTH045-3 furnace\u003c\/li\u003e\n\u003cli\u003eApplication: Low-voltage control wiring\u003c\/li\u003e\n\u003cli\u003eMaterial: Heat-rated insulation with keyed connector\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine OEM harness ships with the correct pin count, wire gauge, and color-coded leads pre-terminated — no splicing or guesswork. Generic universal harnesses often require cutting factory connectors and hand-crimping, which introduces failure points and can void warranty coverage. For a furnace control circuit, the exact-fit OEM part is the safest choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5)\u003c\/strong\u003e — Plug-and-play replacement. Disconnect power at the breaker, unplug the old harness, route and seat the new connector until it clicks. No wire cutting required. Professional installation is recommended if you are not comfortable working inside a furnace cabinet.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058165105011,"sku":"GOODMAN-12510","price":29.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-12-pin-wiring-harness-for-gmth045-3-0259f00007p","provider":"National HVAC Parts","version":"1.0","type":"link"}