Wiring & Harnesses

Wiring and harnesses for Harley-Davidson® Touring audio: plug-and-play harnesses, waterproof speaker wire, line output converters, power and ground kits and signal harnesses from Cicada Audio, SaddleTramp, Precision Power and Rockford Fosgate. Good wiring keeps a system reliable through heat, vibration and wet weather.

Bikes on the Boom! Box and earlier factory radios use analogue speaker-level connections, while 2024 and newer Skyline OS bikes need a compatible A2B interface in the signal path.

Signal Harnesses Power Wiring Kits Speaker Wire Wiring Connectors

Signal Harnesses

Power Wiring Kits

Speaker Wire

Wiring Connectors

What wiring does your Harley audio install need?

This collection brings together plug-and-play harnesses, speaker wire with waterproof quick disconnects, line output converters, power and ground kits and signal harnesses from Cicada Audio, SaddleTramp, Precision Power and Rockford Fosgate. Many modern motorcycle amplifiers accept high-level inputs directly, so a line output converter is only required where the amplifier or integration method calls for one. The right harness depends on your platform: bikes on the Boom! Box and earlier factory radios, including 2014 to 2025 trikes, use analogue speaker-level connections, while 2024 and newer Skyline OS bikes need a compatible A2B interface in the signal path. Match the wiring to your amplifier, speakers and bike.

FAQ

Why does the wiring matter so much?

On a bike, connections face heat, vibration and moisture, which expose a poor connection fast. Correct gauge, connectors and a clean signal path are what keep the system reliable and noise-free.

Do I need a plug-and-play harness?

A plug-and-play harness connects an amplifier or rear stage without cutting the factory loom, which keeps the install clean and reversible. The right one depends on your bike and amplifier.

What wiring do 2024 and newer Skyline OS bikes need?

Skyline OS uses A2B digital audio, so an amplifier build needs a compatible A2B interface in the signal path. See the audio integration interfaces.

What gauge power wire do I need?

It depends on the amplifier's current draw and the run length. A correctly sized power and ground kit keeps voltage stable under load. Tell us your amplifier and we will confirm.

Not sure what fits? Tell us your year, model and current audio setup and we'll confirm the parts before you order, or contact Motorcycle Audio Australia.

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Wiring & Harnesses

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Signal Harnesses

HDCVOBP21-23 - H-D® CVO Rear Bag Amp Bypass Plug - 2021-2023

HDCVOBP - H-D® CVO Rear Bag Amp Bypass Plug

Cicada Audio HDLOC-MAX2 High Output 2-Channel Line Output Converter (2014+ Harley Radios)

Cicada Audio HD56oMPS-1.5 – H-D Output Bridged Molex® Pass-Through Harness (1.5′, Stereo)

Cicada Audio HD56oMPS-8 – H-D Output Bridged Molex® Pass-Through Harness (8′, Stereo)

Cicada Audio HDFRBoM-1.5 – H-D Bridged Speaker Output Molex® Harness (1.5′, Stereo / Bridged)

Cicada Audio HDFRBoM-8 – H-D Bridged Speaker Output Molex® Harness (8′, Stereo / Bridged)

Cicada Audio HDFiM56Y-1.5 Molex® Pre-Out 5/6 Y-Harness (1.5′) – Fairing Amp Link

Cicada Audio HDFiM56Y-8 Molex® Pre-Out 5/6 Link Harness (8′) – Fairing Dual Amp

HDRiMY - H-D® Input - Molex® - REAR/Y Adaptor

HDFiMY - H-D® Input - Molex® - FRONT/Y Adaptor

HDRoM - H-D® Output - Molex® - REAR

Cicada Audio HDFoM Front Harley Speaker Plugs to Amplifier Output Harness (Molex®)

Cicada Audio HDRiM Rear HD Connector to MOLEX® Input Harness (2013–2024 Touring)

Cicada Audio HDFiM HD Radio to Front Fairing Amp Input Harness with Load Resistors

RCA2iM - RCA Input - Molex®

Cicada Audio HDFLXRO – H-D® Rear Speaker Output Harness for FLX Amplifiers

Cicada Audio HDFLXFo – H-D® Front Speaker Output Harness for FLX Amplifiers

Cicada Audio C2C90 – 90° USB-C Waterproof Extension Kit for DSP88v2 / DSP412PRO / DSP600.4D

Cicada Audio HDFLXPro4K – Harley-Davidson 4-Channel FLX Wiring Harness Kit with 4 AWG Power Wire

Cicada Audio HDPro4K – Harley-Davidson 4-Channel CX/DSP Wiring Harness Kit with 8 AWG Power Wire

Cicada Audio 24HDMFH – H-D® Saddlebag Amp, Speaker & Woofer Wiring Harness

SP2oM - Speaker Output - Molex®

SaddleTramp BC-9723 – Saddlebag Speaker Wiring Harness for 1998–2023 Harley-Davidson Touring

SaddleTramp BC-9720 – Rear Speaker Backbone Harness for 2014–2023 Harley-Davidson Touring

2-Pin Molex Parallel Adapter for Speakers

Amplifier Harness for Saddlebag – 2-Channel or 4-Channel (1998+)

Factory Radio T-Harness – Amplifier Signal Adapter for Harley 2014–2023

Deluxe Rear Speaker Split Backbone Wire Harness – Plug & Play (Harley 2014+)

8-Gauge Premium Fairing-Mounted Amp Power Harness with Disconnect

Amplifier-to-Fairing Speaker Plug & Play Harness with Service Disconnect – Harley 2014+

Plug & Play Signal Adapter for Aftermarket Amplifiers – Harley 2014+

Rear Bypass Harness for Saddlebag-Mounted Factory Amplifier – Harley 2014+

Front Factory Amplifier Bypass Harness for Fairing – Harley 2014+

2-Channel RCA Kit from Fairing to Saddlebag with Disconnect – Harley

Stealth Power Tap Harness for Harley 2014+ (Without CB Option)

Rockford Fosgate 2014+ Road Glide® & Street Glide® Amplifier Wiring Kit

Rockford Fosgate 1998-2013 Road Glide® & Street Glide® Amplifier Wiring Kit

SaddleTramp BC-9725 – OE Amplifier Bypass Harness Kit for 1998–2013 Harley-Davidson CVO Touring

SaddleTramp BC-9726 OE Amplifier Bypass and Radio Harness Kit for 2014 to 2023 Harley Touring and CVO

SaddleTramp BC-9721 – Rear Audio 3-Way Splitter Harness for 1998–2023 Harley-Davidson Touring

SaddleTramp BC-9711 – Rear Speaker Retention Harness for 1998–2013 Harley-Davidson Touring

SaddleTramp BC-9717 – Rear Audio Bypass T-Harness for 2014–2023 Harley-Davidson Ultra Limited

Replacement Harness for HDHU.14+

Replacement Harness for HDHU.14Si & V2

RF Rear Bypass Harness for Saddlebag-Mounted Factory Amplifier – Harley 2021–2023

Cicada Audio 24HDARH – H-D 2024+ OEM Amplifier Relocation Harness

MAA 4-Channel T-Harness – SoundStream HDHU.V2 & WHD14+/UNLOC to Cicada Amplifiers (2014–2023 Harley Touring)

MAA 4-Channel T-Harness – SoundStream WHD14+ (No UNLOC) to Cicada Amplifiers (2014–2023 Harley Touring)

Power Wiring Kits

24HDPA - 2024+ Universal Power / Ground / Ignition Harness

Cicada Audio HDFLXPro4K – Harley-Davidson 4-Channel FLX Wiring Harness Kit with 4 AWG Power Wire

Cicada Audio HDPro4K – Harley-Davidson 4-Channel CX/DSP Wiring Harness Kit with 8 AWG Power Wire

Cicada Audio HDPG2KD – Harley-Davidson 2 AWG Heavy-Duty Dual-Amp Power & Ground Kit

Cicada Audio HDPG4K – 4 AWG Amplifier Power & Ground Install Kit for Harley-Davidson

Cicada Audio HDPG8K – Harley-Davidson 8 AWG Power & Ground Wiring Kit

Cicada Audio HDPG6K – 6 AWG Power & Ground Amplifier Wiring Kit for Harley-Davidson®

Cicada Audio HDPG2KT – 2 AWG Tour-Pak® Amplifier Wiring Kit

Cicada Audio CHDDB13x2 – Low Profile 2 AWG to 4 AWG Distribution Block (2 Pack)

Precision Power HD14.AWK – Plug-n-Play Amplifier Install & Wiring Kit for 2014+ Harley-Davidson Touring

Precision Power HD13.AWK – Plug-n-Play Amplifier Install & Wiring Kit for 1998–2013 Harley-Davidson Touring

Speaker Wire

H-D® Front Output "Y" Splitter with Lower Speaker Wire Extensions

Cicada Audio 24HDRO 2024+ Harley Rear Output Speaker Wire Harness (Plug & Play)

Cicada Audio QD1412 – 14 AWG Speaker Wire with Quick Disconnects (12′ Pair)

Cicada Audio QD1012 – 10 AWG Speaker Wire with Quick Disconnects (12′ Pair)

Cicada Audio 26HDRO – 2026 Harley-Davidson Rear Output Speaker Wire Harness

Wiring Connectors

Cicada Audio QDW1412 – 14 AWG Speaker Wire with Waterproof Quick Disconnects (12′ Pair)

Cicada Audio QDW1012 – 10 AWG Speaker Wire with Waterproof Quick Disconnects (12′ Pair)

Cicada Audio C2C – USB-C Waterproof Extension Kit for DSP88V2 / DSP600.4D / FLX1400.4PRO

What wiring does your Harley audio install need?

FAQ