{"product_id":"metra-tyto-01-jbl-amplifier-interface-harness-99-8159s-dash-kit","title":"Metra TYTO-01 JBL Amplifier Interface Harness \u0026 99-8159S Dash Kit","description":"\u003cp\u003eOur review looks at the Metra TYTO-01 JBL amplifier interface harness paired with the Metra 99-8159S Double DIN dash kit, aimed at owners of select Toyota and Lexus RX models who want a clean factory-style radio upgrade. The bottom line: this combination is for installers who need a reliable wiring interface for JBL and JBL Synthesis amplified systems and a gapless, factory-matching dash kit that accepts Double DIN head units or a single DIN plus storage pocket. It stands out for fit, build quality, and an easier installation workflow when used with compatible vehicles.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier compatibility:\u003c\/strong\u003e Designed specifically for select 2003-2008 Toyota vehicles with JBL and JBL Synthesis amplified audio systems, ensuring correct signal routing to factory amps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable input gain:\u003c\/strong\u003e The harness offers adjustable input gain so installers can fine tune signal levels between the new radio and the OEM amplifier to minimize distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB update interface:\u003c\/strong\u003e The TYTO-01 includes a USB update interface compatible option so the harness can stay current with firmware needs during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble DIN dash accommodation:\u003c\/strong\u003e The 99-8159S dash kit accommodates a Double DIN radio while maintaining a gapless fit and factory matched texture for a clean OEM look.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle DIN storage pocket:\u003c\/strong\u003e When a single DIN head unit is preferred, the kit includes a storage pocket below the radio for sensible use of the unused space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e High-grade ABS plastic and factory-matched paint and texture give a sturdy, integrated appearance after installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis package is best for DIY enthusiasts and professional installers working on compatible Toyota and Lexus RX vehicles who want to retain the factory amplified system while upgrading to a modern Double DIN radio. It is particularly useful when preserving OEM amplifier functions and avoiding complex splicing.\u003c\/p\u003e\n\u003cp\u003eIt is not intended for owners of non-JBL factory systems or for vehicles outside the specified model years. Buyers who need full active crossover tuning beyond adjustable input gain or who require amplified speaker-level outputs that differ from factory wiring should consider a dedicated DSP or amplifier solution instead.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWorks well with compatible Toyota and Lexus models, providing a near-perfect fit and factory appearance.\u003c\/li\u003e\n\u003cli\u003eAdjustable input gain helps reduce mismatch noise and lets installers dial in levels for better integration.\u003c\/li\u003e\n\u003cli\u003eIncludes a storage pocket and gapless trim, delivering a finished interior look for Double DIN or single DIN installations.\u003c\/li\u003e\n\u003cli\u003eClear instructions and solid construction make installation straightforward for competent installers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report mixed sound quality outcomes, including occasional static, depending on the vehicle's original wiring and amplifier condition.\u003c\/li\u003e\n\u003cli\u003eNot compatible with non-JBL factory amplified systems or models outside the listed years.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eTYTO-01 harness + 99-8159S dash kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eSelect 2003-2008 Toyota JBL\/JBL Synthesis and select Lexus RX vehicles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDash configuration\u003c\/td\u003e\n\u003ctd\u003eDouble DIN mount; includes single DIN storage pocket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-grade ABS plastic, painted black with factory texture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeatures\u003c\/td\u003e\n\u003ctd\u003eAdjustable input gain; USB update interface compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit contents\u003c\/td\u003e\n\u003ctd\u003eHousing, trim panel, brackets, storage pocket, screws, instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Metra TYTO-01 harness paired with the 99-8159S dash kit is a practical choice for those upgrading radios in compatible Toyota and Lexus RX models while retaining the factory JBL amplifier. It delivers a clean, factory-like finish and useful installation features, making it a good value for owners who prioritize fit and integration over advanced audio tuning.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this work with my Lexus RX?\u003c\/strong\u003e\u003cbr\u003eThis kit is for select Lexus RX vehicles; confirm model year compatibility with the product fit guide before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the harness allow firmware updates?\u003c\/strong\u003e\u003cbr\u003eYes, the TYTO-01 includes a USB update interface compatible option to apply firmware updates when required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use a single DIN head unit?\u003c\/strong\u003e\u003cbr\u003eYes, the 99-8159S includes a storage pocket below the radio for single DIN mounting while keeping a finished appearance.\u003c\/p\u003e","brand":"Axxess","offers":[{"title":"Default Title","offer_id":48252022227163,"sku":"B08HZSDGC5","price":130.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/41nnxZcA0FL._AC_SL1001.jpg?v=1771065372","url":"https:\/\/gearmusthave.com\/products\/metra-tyto-01-jbl-amplifier-interface-harness-99-8159s-dash-kit","provider":"GearMustHave","version":"1.0","type":"link"}