VW / Audi Plug & Play Factory Radio Subwoofer Harness
⚠️ Warning: Needs a radio T-harness. This plugs into an ENFIG radio T-harness such as the AAI4-VW16, and in most cars it won't work on its own.
ENFIG · Car Audio · Subwoofer Harness
VW Plug & Play Factory Radio Subwoofer Harness
T-Harness for Subwoofer Amp · Plug-In · No Wire Cutting
Adds a speaker-level RCA output for a subwoofer amplifier or DSP. It plugs into ENFIG's radio T-harness, like the AAI4-VW16, so you don't have to cut factory wiring. For more bass, ENFIG recommends pairing it with a bass restoration processor such as the Kicker KEYLOC.
$39.99Ships from our supplier
Questions?
No wire cutting
Speaker-level RCA
Free US shipping over $100
⚠️ Warning: Needs an ENFIG radio T-harness, such as the AAI4-VW16. It won't work on its own in most cars.
ENFIG · T-Harness for Subwoofer Amp
VW Plug & Play Factory Radio Subwoofer Harness
$39.99Ships from our supplier
Questions?
Features
What you're getting.
OutputSpeaker-Level RCAFeeds an amplifier or DSP
InstallPlug-InConnects to an ENFIG radio T-harness
BassPairs With KEYLOCENFIG recommends a bass restoration processor
In The Box
This kit includes.
| Qty | Part | Brand | SKU |
|---|---|---|---|
| 1 | ISO-T-SUBRCA-18 subwoofer T-harness | ENFIG | ISO-T-SUBRCA-18 |
Radio T-harness, amplifier, subwoofer and power wiring are sold separately. If your amp or DSP doesn't take a speaker-level signal on its RCA inputs, cut off the RCAs and wire to its high-level inputs.
Fitment
Will it fit?
⚠️ Fitment depends on the radio T-harness this plugs into. The list below is for ENFIG's AAI4-VW16. It does not work with factory premium amplified systems.
| Model | Years | Fitment |
|---|---|---|
| VW Golf / GTI / Golf R (MK7, MK7.5) | 2015–2021 | Confirm First |
| VW Jetta / GLI | 2016–2026 | Confirm First |
| VW Tiguan | 2016–2026 | Confirm First |
| VW Atlas | 2018–2026 | Confirm First |
| VW Arteon, Passat, Taos, ID.4 | 2016–2025 | Confirm First |
| Audi A4 / A5 (B9) | 2017–2024 | Confirm First |
| Cars with a factory amp (Fender, Dynaudio, B&O, Beats, Burmester) | — | Not Compatible |
Ready to upgrade?
VW Plug & Play
Subwoofer Harness
T-Harness for Subwoofer Amp · Plug-In · No Wire Cutting
Price$39.99
VW / Audi Plug & Play Factory Radio Subwoofer Harness
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