{"product_id":"maa-t-harness-soundstream-hdhu-v2-whd14-unloc-hertz-sp-amps","title":"MAA 4-Channel T-Harness – SoundStream HDHU.V2 \u0026 WHD14+\/UNLOC to Hertz SP Amplifiers (2014–2023 Harley Touring)","description":"\u003ch2\u003e4-channel T-harness for 2014–2023 Harley-Davidson® Touring – SoundStream HDHU.V2, or WHD14+ with the WHD.UNLOC kit, to a Hertz SP-series amplifier\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis harness does the whole amplifier connection in one part. It takes all four speaker-level outputs from a SoundStream HDHU.V2, or a WHD14+ running the WHD.UNLOC kit, feeds them to a Hertz SP-series amplifier, and returns the amplifier's output into the factory speaker harness. The Maestro RR\/RR2 connection is carried in the same loom, so gauges and thumb control keep working. Nothing on the bike is cut or spliced.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eTwo things decide which harness you need: your head unit and your amplifier. This one is built for the \u003cstrong\u003eHertz SP series\u003c\/strong\u003e. If you are running a Cicada Audio® amplifier instead, you want the \u003ca href=\"\/products\/maa-t-harness-soundstream-hdhu-v2-whd14-unloc-cicada-amps\"\u003eCicada version\u003c\/a\u003e. If your WHD14+ is running without the UNLOC kit, see the \u003ca href=\"\/products\/maa-t-harness-soundstream-whd14-no-unloc-hertz-sp-amps\"\u003eWHD14+-only Hertz harness\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWho This Is For\u003c\/h3\u003e\n\u003cp\u003eYou are running, or about to run, a SoundStream \u003ca href=\"\/products\/soundstream-v2-harley-carplay-head-unit-2014-2023\"\u003eHDHU.V2\u003c\/a\u003e or \u003ca href=\"\/products\/soundstream-whd14-plus-harley-head-unit\"\u003eWHD14+\u003c\/a\u003e in the fairing of a 2014–2023 Harley-Davidson® Touring bike, with a Hertz SP-series amplifier mounted in the fairing behind it. On a WHD14+ build the \u003ca href=\"\/products\/soundstream-whd-unloc-oem-integration-upgrade-kit-whd14\"\u003eWHD.UNLOC kit\u003c\/a\u003e is required – this harness plugs into the Maestro RR2 module that comes with it, and will not suit a WHD14+ running without the kit.\u003c\/p\u003e\n\n\u003ch3\u003eWhat This Is Best For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt for the Hertz SP series\u003c\/strong\u003e – the amplifier end is terminated for the SP-series input, so it drops straight onto a \u003ca href=\"\/products\/hertz-sp-4-500-4-channel-class-d-amplifier-harley\"\u003eHertz SP 4.500\u003c\/a\u003e or \u003ca href=\"\/products\/hertz-sp-4-900-4-channel-high-power-amplifier-harley\"\u003eSP 4.900\u003c\/a\u003e without hand-wiring the input plug. Step up from the 4.500 to the 4.900 later and the harness carries over.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal out and speaker return in one loom\u003c\/strong\u003e – a true T-harness, not a one-way signal lead. Four channels of speaker-level output go to the amplifier, and the amplifier's output comes back through the harness into the factory speaker loom.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaestro integration stays intact\u003c\/strong\u003e – the module connection is part of the loom rather than a separate splice, so thumb wheel volume, track skip, gauges and CAN-bus data behave exactly as they did before the amplifier went in.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNothing gets cut\u003c\/strong\u003e – head unit loom, OEM speaker harness and amplifier input plug all stay factory. Spliced-in signal tails are the most common reason a used bagger's audio has to be unpicked and rebuilt.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"maa-alert\"\u003e\n  \u003ch3\u003eWhich Harness Do You Need?\u003c\/h3\u003e\n  \u003cp\u003eEvery one of these suits 2014–2023 Touring, so the model year will not tell you which to order. Two things decide it. \u003cstrong\u003eYour head unit:\u003c\/strong\u003e an HDHU.V2, or a WHD14+ with the WHD.UNLOC kit, needs the Maestro leg – that is this harness. A WHD14+ running on its own does not, and takes the \u003ca href=\"\/products\/maa-t-harness-soundstream-whd14-no-unloc-hertz-sp-amps\"\u003eWHD14+-only version\u003c\/a\u003e. \u003cstrong\u003eYour amplifier:\u003c\/strong\u003e this harness is terminated for the Hertz SP series; for Cicada Audio® amps see the \u003ca href=\"\/products\/maa-t-harness-soundstream-hdhu-v2-whd14-unloc-cicada-amps\"\u003eCicada version\u003c\/a\u003e. Still running the factory Harley radio? Neither of these suits – call us on 07 3350 1354.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eThe Bottom Line\u003c\/h3\u003e\n\u003cp\u003eFour channels out, amplifier output returned to the factory loom, Maestro integration carried through, and the whole thing reversible. It removes the stage of the install where noise problems and control faults get introduced. Add to cart above – the amplifier still needs its own power and earth run, covered below.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eHead Unit\u003c\/th\u003e\n\u003cth\u003eModule Requirement\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSoundStream HDHU.V2\u003c\/td\u003e\n\u003ctd\u003eMaestro RR or RR2, sold separately\u003c\/td\u003e\n\u003ctd\u003e2014–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSoundStream WHD14+\u003c\/td\u003e\n\u003ctd\u003eWHD.UNLOC kit required – Maestro RR2 included in that kit\u003c\/td\u003e\n\u003ctd\u003e2014–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr class=\"maa-tab-split\"\u003e\n\n\u003ch3\u003eHow the Harness Sits in the System\u003c\/h3\u003e\n\n\u003cp\u003eThe loom has three ends rather than two. The head unit end takes \u003cstrong\u003efour channels of speaker-level output\u003c\/strong\u003e from the SoundStream unit's own Class-D output section and carries them to the amplifier's input stage without converting to line level first. The amplifier end returns \u003cstrong\u003ethe Hertz amplifier's speaker output back into the factory harness\u003c\/strong\u003e, so the OEM speaker wiring downstream of the radio is used exactly as Harley-Davidson® built it. \u003cem\u003eOn the road: fewer conversion stages between source and amplifier means fewer places for noise to enter, and it shows up most at idle, when alternator whine is at its most audible through a fairing.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eMaestro RR\/RR2 connection\u003c\/strong\u003e runs inside the same loom, terminated to the module rather than tapped alongside it. \u003cem\u003eOn the road: the gauge cluster and the thumb controls keep behaving as one system rather than as an aftermarket stereo bolted next to a motorcycle.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTerminations\u003c\/strong\u003e are machine-crimped, strain-relieved and continuity-tested before dispatch. \u003cem\u003eOn the road: hand-soldered joints work-harden under constant fairing vibration and fail intermittently – a channel that drops out over rough bitumen and then tests perfectly back in the workshop.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-channel T-harness – head unit to amplifier, amplifier to OEM speaker loom\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHead Unit Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSoundStream HDHU.V2; SoundStream WHD14+ with WHD.UNLOC kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplifier Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHertz SP-series amplifiers\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpeaker level\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Integration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eiDataLink Maestro RR and RR2 – module not included\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmplifier Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFairing mount\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCarries Amplifier Power \/ Earth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo – separate power and earth run required\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2014–2023 Harley-Davidson® Touring\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × MAA Soundstream-to-Hertz 4-channel T-harness, assembled and tested\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Maestro module, the WHD.UNLOC kit and the amplifier power and earth kit are sold separately.\u003c\/p\u003e\n\n\u003ch3\u003eCompleting the Install\u003c\/h3\u003e\n\u003cp\u003eThe amplifier needs its own power and earth run from the battery – the \u003ca href=\"\/products\/8-gauge-premium-fairing-amp-power-harness-with-disconnect\"\u003e8-Gauge Premium Fairing-Mounted Amp Power Harness with Disconnect\u003c\/a\u003e is the matching part for a fairing-mounted amp, and its inline disconnect turns fairing removal into a one-plug job.\u003c\/p\u003e\n\u003cp\u003eBecause the harness hands the amplifier's output back to the factory loom, fairing speakers are already taken care of. Rear speakers depend on how your bike is wired – some configurations run the rear channels through to the saddlebags or Tour-Pak® on their own, and some need a separate backbone harness to get there. The \u003ca href=\"\/products\/saddletramp-bc-9720-rear-speaker-backbone-harness-harley-touring\"\u003eSaddleTramp BC-9720 Rear Speaker Backbone Harness\u003c\/a\u003e is the usual answer, with the \u003ca href=\"\/products\/deluxe-rear-speaker-split-backbone-wire-harness-plug-play-harley\"\u003eDeluxe Rear Speaker Split Backbone Harness\u003c\/a\u003e for builds running Tour-Pak® and saddlebag speakers together. If you are not sure which applies to your bike, call us before ordering.\u003c\/p\u003e","brand":"Motorcycle Audio Australia","offers":[{"title":"Default Title","offer_id":51032005574903,"sku":"MAA-V2-HZ-WH","price":250.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6505\/1639\/files\/MAA-4-Channel-T-Harness-SoundStream-HDHU_V2-WHD14UNLOC-to-Hertz-SP-Amplifiers-2014-2023-Harley-Touring.png?v=1792550500","url":"https:\/\/www.motorcycleaudio.com.au\/products\/maa-t-harness-soundstream-hdhu-v2-whd14-unloc-hertz-sp-amps","provider":"Motorcycle Audio Australia","version":"1.0","type":"link"}