More about the product
Primary ISO Harness
The Aerpro APP021 is a Primary Harness designed to suit various BMW & Landrover vehicles with round pin plug type. It allows for the installation of an aftermarket headunit without the need to remove the factory wiring plug from the vehicle. APP021 converts the factory headunit plug in the vehicle into a universal double ISO connector system. For simple plug and play headunit installation, add an Aerpro APP8 Secondary Headunit harness to suit your new aftermarket headunit and the two looms will connect together via the ISO connector system.
Please Note:
- Harnesses vary between vehicle models, to find the correct harness for your vehicle, use the Aerpro Vehicle Selector.
- Depending on the vehicle and aftermarket headunit, installation may not be completely plug and play, a small amount of hard-wiring may still be required to complete the installation.
Important Notes:
- Designed for quick, simple and precise aftermarket headunit wiring installation
- Vehicle specific plug designed to connect directly into the vehicles original headunit wiring loom, no need to remove the factory plug
- Converts vehicle specific plug to universal ISO connector system
- Provides a Plug & Play installation solution for aftermarket headunits when paired with an Aerpro APP8 Secondary Harness (some hard-wiring may still be required)
- Secure Clips on ISO connectors to ensure secure and long lasting connection
- Suits various BMW & Landrover vehicles with round pin plug type
Inclusions & Notes:
- Harness Type: Primary Harness
- Plug Type: Vehicle Specific (Rounf Pin Plug Type)
- Connection Type: Universal ISO Socket (Female Type)
- Notes:
- Suits various BMW & Landrover Vehicles with round pin plug type.
- When paired with Aerpro APP8 Series Secondary Harness plug and play solution a small amount of hardwired installation may still be required depending on the vehicle and aftermarket headunit type.
Suitable Vehicles:
- BMW 3 Series 1990-1999 E36
- BMW 3 Series 1998-2005 E46
- BMW 5 Series 1996-2004 E39
- Landrover Freelander 1997-2003
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.

