Focal Inside Volkswagen VW Y-ISO T-Harness Impulse 4.320 4 Channel Amplifier
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The Focal Inside VW Y-ISO T-Harness is a plug-and-play wiring loom that connects the Focal Impulse 4.320 4-channel amplifier directly to the original head unit in compatible Volkswagen vehicles without a factory amplifier. It is part of the Focal Inside vehicle-specific installation range.
Key specifications
- Type: Y-ISO T-harness adapter, Focal Inside
- Compatible vehicles: Volkswagen 2005 onwards
- Compatible amplifiers: Impulse 4.320, FIT 9.660
- Cable length: 1m
- For: vehicles without a factory amplifier
- Connection: ISO connectors to the extension cable, no soldering
- Installation: plug and play
T-harness adapter for Volkswagen vehicles without a factory amplifier
Connects the Focal Impulse 4.320 4-channel amplifier directly to the original head unit in compatible Volkswagen vehicles. No soldering required — ISO connectors link to the extension cable for a clean, straightforward fit.
Inside upgrade harness
- Designed specifically for compatible Volkswagen vehicles
- Plug and play installation
- Direct link from the amplifier to your original head unit
Cables and connectors you may also need
- Extension cable to connect the T-harness to the amplifier: IW-IMP-EXT150 Extension Cable
- Harness to connect the T-harness to the amplifier and subwoofer(s): IW-IMP-2.2 and IW-IMP-2.1 Harness (see the 2.2 IMP Harness and 2.1 IMP Harness)
Check your vehicle compatibility by contacting us or visiting the Focal Inside website.
Explore the full range in Focal Wiring Looms.
Specification
| Length | 1m (3.3ft) |
|---|---|
More specs
| |
What's Included
- Focal Volkswagen Y-ISO Harness
Focal
About the Focal IW-VW-YISO
From our tech experts at CEN
A Focal Inside wiring harness for the Volkswagen, connecting a direct-fit system to the vehicle’s own wiring without cutting into the factory loom.
Who it suits
Volkswagen owners fitting a Focal Inside system who want the work reversible and the car returnable to standard.
Our tech experts advise
Harnesses are specific to vehicle, year and which factory audio system the car was built with, and the wrong one simply will not work. We confirm against your exact vehicle before ordering — get in touch. See car audio installation.
Explore the full Focal range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Focal
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Frequently Asked Questions
Q: Does the Volkswagen Y-ISO harness work in cars with a factory amplifier?
A: No. It is a T-harness for Volkswagen vehicles without a factory amplifier, linking the original head unit to the amplifier.
Q: Which amplifiers does the Volkswagen Y-ISO harness work with?
A: It is listed as compatible with the Focal Impulse 4.320 and FIT 9.660 amplifiers.
Q: Do I need to solder anything?
A: No. It connects to the extension cable via ISO connectors, so no soldering is required.
