{"product_id":"sierra-18-99401-engine-adapter-harness-for-johnson-evinrude-outboards-1976-1995-adapts-to-deutsch-dt-controls","title":"Sierra Johnson\/Evinrude Engine Adapter Harness 18-99401, Adapts 1976-1995 Engines to Deutsch Controls","description":"\u003cp\u003eThe Sierra 18-99401 Engine Adapter Harness lets owners of older Johnson and Evinrude outboards connect to newer Deutsch-style control wiring without replacing the engine's original harness. It is built as a universal-fit adapter, bridging the older engine-side connector to the modern Deutsch connector used on updated control systems, so the two generations of wiring can be joined directly instead of splicing wires by hand.\u003c\/p\u003e\u003cp\u003eThe harness measures 18 inches in length, giving enough reach to route between the engine wiring and the control-side connection point during an install. On the control end it terminates in a DT Connector, matching the Deutsch connector style found on newer outboard control harnesses. It is supplied as a single adapter harness, ready to connect between the two systems once the correct connector orientation is confirmed for the specific engine.\u003c\/p\u003e\u003cp\u003eThis adapter is intended for 1976-1995 Johnson and Evinrude engines that need to interface with new Deutsch-style controls. Because fitment depends on the exact engine and control system being paired, buyers should confirm the connector configuration matches their engine before installing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99401\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Engine Adapter Harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Johnson and Evinrude engines, 1976-1995\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapts To:\u003c\/strong\u003e New Deutsch-style engine controls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e DT Connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarness Length:\u003c\/strong\u003e 18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson outboard engines, 1976-1995\u003c\/li\u003e\n\u003cli\u003eEvinrude outboard engines, 1976-1995\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-99401 adapter harness fit?\u003c\/strong\u003e It is built for Johnson and Evinrude outboard engines from 1976-1995 that need to connect to newer Deutsch-style control wiring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this harness actually do?\u003c\/strong\u003e The 18-99401 adapts the older engine-side wiring connector on 1976-1995 Johnson and Evinrude outboards to a new Deutsch-style connector, so the older engine can be wired into updated controls without re-splicing the factory harness.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is the Sierra 18-99401 harness?\u003c\/strong\u003e It measures 18 inches in length, end to end.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of connector is on the control end?\u003c\/strong\u003e The control-side end of the 18-99401 terminates in a DT Connector, matching the Deutsch connector style used on newer outboard control harnesses.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a universal-fit part?\u003c\/strong\u003e Yes, the 18-99401 is described as a universal-fit adapter for 1976-1995 Johnson and Evinrude engines, but buyers should verify the connector configuration matches their specific engine before installing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99401 weigh?\u003c\/strong\u003e The Sierra 18-99401 adapter harness weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many pieces come with this part?\u003c\/strong\u003e The 18-99401 is supplied as a single adapter harness (one item).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this to upgrade an older Johnson or Evinrude to modern controls without rewiring the whole boat?\u003c\/strong\u003e That is its purpose: the 18-99401 lets a 1976-1995 Johnson or Evinrude engine plug into new Deutsch-style control wiring through the adapter harness instead of requiring the control harness to be rewired to the old connector style.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99401 include the Deutsch connector on both ends?\u003c\/strong\u003e It has a DT Connector on the control side to mate with new Deutsch-style controls, with the opposite end configured for the 1976-1995 Johnson\/Evinrude engine-side connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra part number 18-99401 the correct number to order?\u003c\/strong\u003e Yes, 18-99401 is the part number for this Johnson\/Evinrude engine adapter harness.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988442755291,"sku":"SIE-18-99401","price":158.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-423-6344_lg__62772.1558111494.500.750.jpg?v=1785188158","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-99401-engine-adapter-harness-for-johnson-evinrude-outboards-1976-1995-adapts-to-deutsch-dt-controls","provider":"Good Vibes Marina","version":"1.0","type":"link"}