More about the product
Primary ISO Harness
The Aerpro APP7230 20 Pin ISO Line Level & Trigger Adapter Harness enables an aftermarket head unit to be installed in various European vehicles with amplified audio systems from the late 1990s to early 2000s. Vehicles include various Audi models with OEM Symphony or Bose amplified systems, Porsche models with PCM 2.1 amplified systems and Mercedes models with OEM Blaupunkt amplified systems. This harness uses the RCA line outputs from the aftermarket head unit and has a blue amp remote trigger wire that connects to the aftermarket head units amp turn on wire.
Important Information
- Harnesses can vary between vehicle models, to find the correct part for your vehicle use the Aerpro Vehicle Selector.
- Aftermarket head unit requires front & rear RCA outputs.
Important Notes:
- Allows aftermarket head units to integrate with vehicle OEM amplified systems in various vehicles
- Connects to the RCA line outputs and amp turn on wire on the aftermarket head unit
- Plugs into the vehicle ISO socket
Inclusions & Notes:
- Harness Type: OEM Amplifier Retention
- Aftermarket Head unit Connection: 4x RCA Plugs & Amp Trigger Wire
- Vehicle Connection: ISO
- Wiring Configuration:
- Blue Cable: Amp Turn On / Trigger
- White RCA: Front Left
- Grey RCA: Front Right
- Purple RCA: Rear Left
- Green RCA: Rear Right
Technical details
- Brand
- Aerpro
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Why Choose Bankstown Sound for Your Car Audio & Tech Upgrades
At our Bankstown Sound store and workshop in Sydney, our team ensures every car and auto audio installation and upgrade starts with an understanding of how you use your car. Our team works with you to understand your driving habits, the features you rely on, and the problems you’re trying to solve.
Most factory setups are built to broad standards and often lack the clarity or seamless connectivity required for how people actually drive. That’s why we focus on modernising your dashboard and audio performance based on how you use your vehicle.

