Aerpro SWBM00C User Manual

Vehicle Application

For vehicles with Business OEM Head unit, 40-Pin Quadlock or 17-Pin BMW Connector.

Vehicles without Professional OEM Sat Nav

Vehicles without OEM amplified system

Key Features

• Retain steering wheel control functionality
• Replace factory radio
• Software updateable
• Remappable buttons

Dipswitch Configuration

This harness allows for the retention of the steering wheel controls as well as other vital features when installing an aftermarket unit into a vehicle. This interface features selectable dipswitches for dedicated applications, simply refer to the provided table for the correct configuration ensuring seamless integration.

Dipswitch 5 & 6: Dipswitch 5 & 6 are reserved for vehicle specific configuration.

KEY1 and KEY2 / KEY1 and KEY2 EXTEND: KEY1 and KEY2 are specifically tailored for analog learning mode-style radios. The SWC module is designed with a resistor chain that precisely matches the required resistance for seamless compatibility with this type of head unit. This mode extends every button press to 2 seconds during the learning process. However, with rolly wheel-designed steering wheel buttons, holding for 2 seconds isn't feasible. Our KEY1 and KEY2 extend feature addresses this by automatically prolonging each press, simplifying head unit programming even in such scenarios. Extend mode is not intended for normal use, it is only used in the teaching process.

ANALOG SINGLE WIRE and ANALOG SINGLE WIRE EXTEND: This function operates similarly to KEY1 and KEY2 but transmits all unique values through the IR SWC single wire. This is crucial for compatibility with learning-style head units featuring only one learning input wire. To ensure compatibility, Aerpro has incorporated this feature into the steering wheel control interface, ensuring seamless operation across various head unit setups. The Analog Extend mode functions identically to its counterpart within the KEY1 and KEY2 system but transmits through a single wire.

* Phone buttons retained with compatible aftermarket head units.

** May not be required for your vehicle / head unit fitment.

Steering Wheel Control Module

The image displays the components of the steering wheel control module: an 18-pin harness connector, dipswitches, a 16-pin head unit connection lead, and a USB-C port.

Connection Guide

Installation Process

1. Take the module and attach the 16-pin patch lead connector for steering wheel control retention, then make the required connections to the aftermarket head unit. Different stereo brands might use different ways to connect, like a 3.5mm jack, an SWC IR wire, or two wired inputs (KEY1 and KEY2). If unsure, check your stereo's manual for details, or look for labels on the stereo cables.
2. Connect the 18-pin connector for power and steering wheel controls from the vehicle.
3. Connect the ISO to the head unit or Aerpro head unit specific harness.
4. Plug in the car-specific leads from the main interface harness to the matching connectors in your vehicle. Depending on the vehicle, not all connectors from the factory head unit will be used.
5. If your interface has extra leads, connect them to the back of the aftermarket head unit's specific harness.**
6. Attach the antenna adapter to the vehicle's existing antenna port from the back of the factory head unit.**
7. If your interface has reverse camera retention, connect the yellow male RCA cable from the interface to the female RCA port on the rear of the aftermarket head unit.**
8. If your aftermarket head unit requires a DAB antenna, plug the DAB antenna connector into the head unit.
9. After connecting all cables and extra parts, make sure to test the stereo and the steering wheel controls before putting the vehicle back together.

* Phone buttons retained with compatible aftermarket head units.

** May not be required for your vehicle / head unit fitment.

Setting the Dipswitches

This interface includes a set of dipswitches. Consult the dipswitch selection guide to select the appropriate configuration. To activate a dipswitch, press it downward into the 'ON' position. Refer to the diagram for an example of the 'AERPRO' dipswitch configuration.

Button Remapping

The steering wheel buttons listed offer the flexibility of being re-configured or assigned dual functions. The availability of these buttons depends on the specific vehicle to which the interface is being installed and if the aftermarket radio supports them. In addition to button remapping, Aerpro offers the option to assign dual functions to each button on the steering wheel. This means that every button can be programmed to execute both a short press command and a long press command. You can also add your own bespoke configuration. Button configuration can be done by PC, MAC and smart phone via the USB port. Button Remapping instructions can be found in a separate guide on Aerpro's website (https://aerpro.com/remapper).

Steering Wheel Control Configuration

The image shows a steering wheel with labeled buttons (A, B, C, D, E, F) and their corresponding functions:

• A: Volume Up
• B: Volume Down
• C: Track Up
• D: Track Down
• E: Hang Up
• F: Pick Up (Short Press) / Voice (Long Press)

The provided diagram, while meticulously researched, serves as an example only. Actual steering wheel control configurations may vary depending on each vehicle.

Connection Diagram

The diagram illustrates the connections for the SWC interface. It shows:

• Headunit Patch Lead: Includes a 3.5mm jack plug for connecting to the aftermarket stereo, and wires for Ground, KEY 2, KEY 1, and SWC IR.
• SWC Interface: Features a 16-pin harness connector to connect to the interface and dipswitches (labeled 1-6).
• SWC Vehicle Harness: Includes an 18-pin harness connector to connect to the interface, an ISO connector for the radio harness, and a vehicle connector. It also indicates selecting either the 17-pin or 40-pin harness and discarding the unused one. The harness wire colors are for illustration purposes only and may differ to the actual harness.