{"product_id":"2022-silverado-sierra-upfitter-switch-harness-engine-bay-relocation-9l7","title":"2022+ Silverado \u0026 Sierra Upfitter Switch Harness — Engine-Bay Relocation (9L7)","description":"\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e\u003cstrong\u003eGM Upfitter Switch Relocation Harness\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eOn GM trucks, the factory 9L7 upfitter (AUX) switch circuits terminate inside the cab — meaning every accessory you wire up has to be run through the firewall and into the interior. Our harness fixes that. It pulls all 5 factory aux circuits out to the engine bay and terminates them in sealed Weather Pack connectors, so your accessories connect right where they live — under the hood, not under the dash.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eEach harness is 6 feet long and built with US-made TXL automotive wire, color-matched to the factory circuits using solid and striped conductors so every switch stays correctly identified. Every circuit is labeled with its amp rating so you know exactly what each switch can carry at a glance. The bundle is wrapped in protective nylon loom and sealed with adhesive-lined heat shrink for a clean, weather-resistant run.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eEach harness includes:\u003c\/strong\u003e\u003cbr\u003e• All 5 factory aux switch circuits, relocated to the engine bay\u003cbr\u003e• Sealed Weather Pack connectors for plug-and-play accessory hookups\u003cbr\u003e• Every circuit labeled with its amp rating for quick identification\u003cbr\u003e• Protective sealing caps on the connectors, keeping them clean and weather-tight until you're ready to wire in your accessories\u003cbr\u003e• US-made TXL wire, color-matched (solid\/striped) to factory circuits\u003cbr\u003e• Protective nylon outer loom and adhesive-lined heat shrink\u003cbr\u003e• Matching accessory pigtails for each circuit\u003cbr\u003e• Heat-shrink solder\/splice connectors for secure, weather-resistant connections\u003c\/p\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eWhy move the connection to the engine bay?\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eMost accessories — light bars, compressors, air lockers, winches, fridges — live up front or under the hood. Terminating the upfitter circuits in the cab forces extra firewall pass-throughs and long interior runs. Relocating them to the bay means shorter, cleaner wiring and a serviceable connection point you can actually reach.\u003c\/p\u003e\n\u003ch4 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eElectrical Load Best Practice\u003c\/h4\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eGM upfitter circuits are fused at the aux electrical center, but most accessories draw far less than the maximum rating. For sustained high-current loads (onboard air compressors, large inverters), standard practice is to use the upfitter switch as a control signal for a dedicated relay and fused power feed rather than routing the full load through the connectors. This reduces heat at connection points, minimizes voltage drop, and gives the most reliable long-term install.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eFor a clean and complete install, pair with our \u003cstrong\u003eGrounding Solution\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003cbr\u003e• 2022+ Silverado \u0026amp; Sierra 1500 (refreshed-interior \/ 9L7 option — the \"2022i\" body)\u003cbr\u003e• 2024+ Silverado \u0026amp; Sierra 2500 \/ 3500 HD\u003cbr\u003e\u003cem\u003eRequires the factory 9L7 upfitter switch option. Built to the X213 \/ Bulletin #193 connector. Not compatible with 2019–early-2022 1500s or 2020–2023 HDs, which use the earlier X260 connector — message us if you have one of those and we'll point you the right way.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eProudly assembled in the USA.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Open Trail Creations","offers":[{"title":"Default Title","offer_id":47508908015787,"sku":"sku-47915856265367","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/8504\/9003\/files\/20260613_175633.jpg?v=1785150867","url":"https:\/\/dieselcurrent.com\/products\/2022-silverado-sierra-upfitter-switch-harness-engine-bay-relocation-9l7","provider":"Diesel Current","version":"1.0","type":"link"}