User Manual

ManualsBrandsPAC ManualsCar Electronics & GPSRadio Replacement and Steering Wheel Control Interface for Select BMW Vehicles - Black/Blue

Pacic Accessory Corporation

| Ph. 866-931-8021 | support@pac-audio.com

www.pac-audio.com

Pacific Accessory Corporation

RP4.2-BM21

Radio Replacement &

Steering Wheel Control Interface

for Select CAN-Bus BMW Vehicles

Rev. 043015

Page 1

Introduction & Features

Important Notes

The RP4.2-BM21 interface allows the replacement of a factory radio in select BMW vehicles. Using this interface will

retain factory features such as: steering wheel controls (SWC), iDrive controls and warning chimes (including rear park

assist and front collision detection). Use of this interface also allows you to program two radio functions to each SWC

button by using short press long press dual command functionality. The RP4.2-BM21 also provides data bus driven

outputs such as data driven accessory power, vehicle speed signal (VSS), illumination, reverse and parking brake.

1. The factory warning chimes are audible either through the factory door speaker or through a separate speaker in the upper

dash. In the event disconnecting the radio results in the vehicle loosing the chimes, there are two ways to retain them. The

RP4.2-BM21 must either be connected to the vehicle’s hands free speaker in the driver side under dash, (using the supplied

harness) or connected to the supplied speaker. The speaker can then be routed and mounted where desired.

2. The RadioPRO App is located on the PAC website (www.pac-audio.com) in the product description section of the RP4.2-BM21.

This app will allow you to congure the user interface options, update product rmware and read the current hardware and

rmware versions of the RP4.2-BM21 module. See page 5 for more information about this app.

Wiring Connection Chart

Interface Connector 2

Yellow +12v **

Black Ground

Orange/White Dimmer

Blue/White Amp Turn On Input

White Front L + input

White / Black Front L - input

Grey Front R + input

Grey / Black Front R - input

Green Rear L + input

Green / Black Rear L - input

Purple Rear R + input

Purple / Black Rear R - input

Vehicle Connector

Interface Connector 1

Red Accessory Output

(10 amp)

Yellow 12v+ **

Black Ground

3.5mm Jack SWC Output

Pink MS-CAN + Input

Pink/Black MS-CAN - Input

Blue/Yellow SWC Output

Red/White 12v+ Programmable Output

Orange/White Illumination Output

Pink Vehicle Speed Signal Output

Violet/White Reverse Output

White/Black HS-CAN + Input (Not Used)

White/Red HS-CAN - Input (Not Used)

Light Green Parking Brake Output (-)

Blue/White Amp Turn On Input

Brown SWC Cong - (See Install Note 4 on Page 2)

Module Layout

Module Status LED

Programmable

Output/USB

Status LED

Interface

Connector 1

Expansion

Port

Interface

Connector 2

Programming

Button

USB Port

Radio Select

Dipswitches

** BMW’s power management sys-

tem causes the constant power wire

behind the radio to drop out after the

key has been removed for 30 mins.

It may be necessary to run a new

12v constant wire from the battery to

the aftermarket radio.

Chime Speaker

Connector

Summary of content (6 pages)

PAGE 1
RP4.2-BM21 Radio Replacement & Steering Wheel Control Interface for Select CAN-Bus BMW Vehicles Introduction & Features The RP4.2-BM21 interface allows the replacement of a factory radio in select BMW vehicles. Using this interface will retain factory features such as: steering wheel controls (SWC), iDrive controls and warning chimes (including rear park assist and front collision detection).
PAGE 2
RP4.2-BM21 Radio Replacement & Steering Wheel Control Interface for Select CAN-Bus BMW Vehicles Installation Steps SET RADIO DIPSWITCHES (ON = DOWN) 1 2 3 4 DIP ON Alpine JVC Kenwood Clarion Pioneer/Other Sony Fusion 1 2 1&2 3 1, 2, & 3 4 1&4 Other = Advent, BOYO, Dual, Lightning Audio, Rockford Fosgate, Visteon 1. The radio select dipswitches on the side of the interface must be adjusted to the proper radio setting before plugging the interface into the vehicle. 2.
PAGE 3
RP4.2-BM21 Radio Replacement & Steering Wheel Control Interface for Select CAN-Bus BMW Vehicles Steering Wheel Controls (cont.
PAGE 4
RP4.2-BM21 Radio Replacement & Steering Wheel Control Interface for Select CAN-Bus BMW Vehicles Steering Wheel Controls (cont.) Optional SWC Programming Procedure 1. Turn the key to the ignition position. 2. Press and release programming button on the side of the interface. The Status LED will turn green. 3. Within 7 seconds, press the button that is to be learned on the steering wheel. The LED will turn red when the button is pressed. At this point you have two options: A.
PAGE 5
RP4.
PAGE 6
RP4.2-BM21 Radio Replacement & Steering Wheel Control Interface for Select CAN-Bus BMW Vehicles RadioPRO App (cont.) Pulsed - This selection will provide a user programmable timed 12v+ output that can be tied to any of the vehicle’s SWC. This means that when you press the assigned SWC, the red/white wire will pulse for the pre-programmed user time. The range for pulse time is 100 milliseconds - 25.5 seconds (.1-25.5).