Match the factory radio part number, vehicle equipment and connector viewing side before using the wiring tables.
E90/E92/E93 Professional radio (2008–2009)
Radio part numbers 65129178860 and 65129170329. Speaker connections depend on the audio package.
16-way main block
Radio-side view. Match the orientation and the installed insert against the connector before wiring.
Cavity
Function
1
Right underseat bass +
2
Right front midrange +
3
Left front midrange +
4
Left underseat bass +
5
Right underseat bass −
6
Right front midrange −
7
Left front midrange −
8
Left underseat bass −
9
CAN
10
Telephone transceiver signal
11
CAN
12
Ground
13
Aerial switching output
14
Dimmed lighting
15
Terminal 30, fuse F40
16
Unused
CD73 (2006–2009)
The main block has 16 numbered cavities. This is a model-family circuit reference. Check the stamped insert ID and equipment on the radio.
Block A · 16-way main
Radio-side view. Match the orientation and the installed insert against the connector before wiring.
Cavity
Function
1
Right rear +
2
Right front +
3
Left front +
4
Left rear +
5
Right rear −
6
Right front −
7
Left front −
8
Left rear −
9
CAN low
10
Remote mute
11
CAN high
12
Ground
13
Radio on
14
Lighting (58g)
15
Battery (30)
16
Gateway UART receive
Block B · 12-way
Local insert numbering shown. Identify block B on the installed unit.
Cavity
Function
1
Microphone +
4
Gateway UART transmit
6
Microphone ground
9
Radio UART receive
11
Radio UART transmit
Block C · 12-way
Local insert numbering shown. Identify block C on the installed unit.
Cavity
Function
2
Left AUX
5
Microphone shield
6
Mono audio +
7
Right AUX
8
AUX return
11
AUX shield
12
Mono audio −
CIC · select 2007–2016 applications
BMW retrofit instructions identify different composite video assignments depending on whether TV reception (SA601) is installed. Other CIC audio and auxiliary circuits still require exact equipment verification.
40-way CIC · documented power, CAN and retrofit video
Viewed into the radio, with the two 12-cavity inserts below the main block.
Cavity
Function
9
CAN low
11
CAN high
12
Ground
15
Battery supply
18
Composite video +, without SA601
21
Composite video +, with SA601
23
Video shield, with SA601
24
Composite video −, with SA601
27
Video shield, without SA601
28
Composite video −, without SA601
E60/E61 CCC · early BMW service configuration
BMW service information gives these CCC circuits. Confirm the exact CCC or M-ASK configuration before using a table.
X13812 · 16-way main block
Radio-side view. Match the orientation and the installed insert against the connector before wiring.
Cavity
Function
1
Right rear +
2
Right front +
3
Left front +
4
Left rear +
5
Right rear −
6
Right front −
7
Left front −
8
Left rear −
9
K-CAN
10
Radio mute
11
K-CAN
12
Ground (31)
13
Aerial diversity or amplifier switching
14
Lighting (58g)
15
Battery supply (30)
16
Unused
X13813 · upper-left 12-way insert
Radio-side view. Match the orientation and the installed insert against the connector before wiring.
Cavity
Function
1
Unused
2
Left AUX +
3
Left central bass +
4
Right central bass +
5
Unused
6
Voice audio +
7
Right AUX +
8
AUX return
9
Right central bass return
10
Left central bass return
11
Video return
12
Voice audio return
X13814 · upper-right 12-way insert
Radio-side view. Match the orientation and the installed insert against the connector before wiring.
Cavity
Function
1
Microphone signal and supply +
2
RGB return
3
Red video
4
Green video
5
Blue video
6
Microphone supply return
7
Unused
8
Unused
9
Unused
10
Unused
11
Unused
12
Acoustic warning speed signal, market dependent
Early E39 · X18126 round-terminal radio
BMW WDS Radio/HiFi configuration. Other round-terminal radios may use a different circuit map.
Legacy 17-way family
Round-terminal radio-side reference with the fuse at upper right. One position is unlabeled in the face reference.
Cavity
Function
1
Left front +
2
Right front +
3
Left rear +
4
Telephone mute
5
Terminal R
6
Right rear +
7
I-bus
8
Left front −
9
Battery supply (30)
10
Speed signal
11
Right front −
12
Left rear −
13
Instrument lighting
14
Right rear −
15
Radio ground
16
Radio-on or antenna control
17
Unused for this configuration
Early E53 X5 · X18126 round-terminal radio
Applies to the early E53 X5 on-board monitor radio module with the round-terminal X18126 connector and non-DSP amplifier. The four differential audio pairs feed the external amplifier. Confirm the housing on the radio module before using this chart.
X18126 · 17-way round-terminal main
Round-terminal radio-side reference with the fuse at upper right. One position is unlabeled in the face reference.
Cavity
Function
1
Left front +
2
Right front +
3
Left rear +
4
Telephone mute
5
Terminal R
6
Right rear +
7
I/K-bus communication
8
Left front −
9
Battery supply (30)
10
Speed signal
11
Right front −
12
Left rear −
13
Instrument lighting
14
Right rear −
15
Radio ground
16
Radio-on or antenna control
17
Unused for this configuration
FLIR PathFindIR · Night Vision camera
Connector and circuits for the original PathFindIR. Check camera generation and BMW harness identification before applying the OEM interface signals.
12-way camera
Camera-side face. Upper row 7–12 and lower row 1–6.
Cavity
Function
1
Power return
2
LIN return
3
Digital video data −
4
Digital video sync −
5
Digital video clock −
6
Analogue video return
7
12 V power
8
LIN communication
9
Digital video data +
10
Digital video sync +
11
Digital video clock +
12
Analogue video output
E39/E53 new-generation flat-pin radio · Business CD53 and related equipment
BMW service training shows this socket and its three blocks for the E39, E52 and E53 new-generation radio family. Business CD53 with MID entered E39 production in September 2000 and E53 production in October 2000. BMW Business CD part 65126908783 is catalogued for this generation. The 12-way charts describe family-level circuits that depend on fitted equipment, including cassette and navigation options.
Upper 16-way block
Radio-side mating face with the relevant block shaded. Each lower insert has its own cavity numbers.
Cavity
Function
1
Right rear audio +
2
Right front audio +
3
Left front audio +
4
Left rear audio +
5
Right rear audio −
6
Right front audio −
7
Left front audio −
8
Left rear audio −
9
Body/instrument bus
10
Telephone mute
11
Telephone-on signal
12
Chassis ground (terminal 31)
13
Aerial and amplifier enable
14
Illumination (terminal 58g)
15
Permanent battery supply (terminal 30)
16
Switched radio supply (terminal R)
Left 12-way insert
Radio-side mating face with the relevant block shaded. Each lower insert has its own cavity numbers.
Cavity
Function
1
Unused
2
CD changer audio return
3
Unused
4
VCR right audio +
5
VCR left audio +
6
VCR audio return
7
Unused
8
CD changer left audio +
9
CD changer right audio +
10
TV right audio +
11
TV left audio +
12
TV audio return
Right 12-way insert
Radio-side mating face with the relevant block shaded. Each lower insert has its own cavity numbers.
Cavity
Function
1
Cassette left audio +
2
Cassette left audio −
3
Unused in this factory training chart
4
Unused in this factory training chart
5
Navigation/TV audio +
6
Telephone audio +
7
Cassette right audio +
8
Cassette right audio −
9
Navigation bus
10
Unused in this factory training chart
11
Navigation/TV audio −
12
Telephone audio −
Other legacy variants
The Pioneer KE-92ZBM and Bavaria C Reverse III still need their complete connector end views checked against the circuit assignments. The E39 and early E53 round-terminal sections above apply to their documented configurations.
Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device
Choosing a selection results in a full page refresh.
Press the space key then arrow keys to make a selection.
