{"product_id":"oem-goodman-wiring-harness-for-gmt070-4a-b1225020","title":"OEM Goodman Wiring Harness for GMT070-4A — B1225020","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1225020 Wiring Harness\u003c\/strong\u003e is a genuine OEM pre-terminated harness built for the \u003cstrong\u003eGMT070-4A\u003c\/strong\u003e package unit. It carries power and control signals between the control board, contactor, transformer, and motor using factory-correct gauge wire, connectors, and terminals. Melted insulation, burnt terminals, or rodent damage in the original harness leads to intermittent faults, no-heat\/no-cool calls, and hard-to-diagnose shorts — a new harness restores clean, reliable connections.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1225020\u003c\/li\u003e\n\u003cli\u003eType: Pre-terminated wiring harness\u003c\/li\u003e\n\u003cli\u003eConnectors: Factory plug\/terminal configuration\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMT070-4A and related package units\u003c\/li\u003e\n\u003cli\u003eColor-coded to the unit wiring diagram\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM harness arrives with the correct connector bodies, wire colors, and lengths, so it plugs in exactly like the original with no splicing or guesswork. Building a harness from generic wire risks wrong gauge, loose crimps, and mis-terminations that can damage the control board. For an electrical assembly, the plug-and-play OEM part is well worth the small premium.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Cut power at the disconnect, photograph the existing connections, then unplug and route the new harness following the unit's wiring diagram. Match every connector to its labeled terminal and verify no wires contact hot or moving parts before restoring power. Plan on 20–30 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058158059891,"sku":"GOODMAN-12333","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-wiring-harness-for-gmt070-4a-b1225020","provider":"National HVAC Parts","version":"1.0","type":"link"}