MINI OEM Head Unit Pinouts

Match the factory radio part number, vehicle equipment and connector viewing side before using the wiring tables.

F54/F55/F56/F57 · radio 65126822083

Listed for select 2014–2016 builds. Cavities 1–8 list speaker channels with polarity unspecified in the reference. Microphone and telematics options affect cavities 17 and 22.

40-way radio connector

Viewed into the radio, with the two 12-cavity inserts below the main block.

Cavity	Function
1	Right woofer circuit
2	Right front midrange circuit
3	Left front midrange circuit
4	Left woofer circuit
5	Right woofer circuit
6	Right front midrange circuit
7	Left front midrange circuit
8	Left woofer circuit
9	K-CAN4
10	Unused
11	K-CAN4
12	Ground
13	Radio-on
14	Locator lighting
15	Terminal 30B, fuse F61
16	Unused
17	Microphone input or telematics microphone +
18	Microphone 2 +
19	Microphone 2 −
20	Unused
21	Reverse camera composite video
22	Microphone input or telematics microphone −
23	Reverse camera shield
24	Reverse camera composite video
25	Microphone 2 shield
26	Unused
27	Unused
28	Unused
29	Ethernet
30	AUX signal
31	Ethernet
32	Ethernet
33	Microphone or telematics shield
34	Unused
35	AUX signal
36	AUX return
37	Ethernet
38	Ethernet
39	Unused
40	Unused

R50/R52/R53 · radio 65126934347

Early R50 service information documents a 17-way radio connector. This map is for the listed configuration with a matching round-terminal housing. The separate 10-way CD-changer insert still needs an exact end view.

Main radio connector

Round-terminal radio-side reference with the fuse at upper right. One position is unlabeled in the face reference.

Cavity	Function
1	Left front speaker +
2	Right front speaker +
3	Left rear speaker +
4	Unused
5	Terminal R, fuse F10
6	Right rear speaker +
7	K-bus
8	Left front speaker −
9	Terminal 30, fuse F27
10	Unused
11	Right front speaker −
12	Left rear speaker −
13	Locator lighting
14	Right rear speaker −
15	Ground
16	Radio on or aerial amplifier

R50/R52/R53 Alpine Boost CD35 · 6917521 · flat-pin

Use this chart with the flat-pin Boost housing. The factory hands-free installation confirms the X18126 supply, ground, bus, lighting and accessory positions. The direct-speaker assignment is documented for the flat-pin R53 installation. Telephone cavities vary with equipment.

X18126 · 16-way main block

Radio-side view of the new-generation flat-pin connector family. The shaded main block is X18126.

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	Vehicle radio bus
10	Telephone mute where equipped
11	Telephone-on input where equipped
12	Ground
13	Aerial amplifier enable
14	Illumination
15	Permanent 12 V supply
16	Switched accessory supply (terminal R)

R56 Boost CD · factory option 6FC

This 2007 factory configuration uses K-CAN and, where fitted, a separate MOST optical connection. The upper-right X13814 insert is unassigned in the factory example.

X13812 · 16-way main block

Radio-side mating face, as viewed at the rear of the R56 Boost CD. The highlighted section is identified by its factory connector designation.

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	K-CAN low
10	Telephone mute
11	K-CAN high
12	Chassis ground (terminal 31)
13	Top HiFi amplifier and aerial diversity enable
14	Illumination (terminal 58g)
15	Switched supply (terminal 30g)
16	Unassigned

X13813 · 12-way auxiliary audio insert

Radio-side mating face, as viewed at the rear of the R56 Boost CD. The highlighted section is identified by its factory connector designation.

Cavity	Function
1	Unassigned
2	Auxiliary right audio +
3	Unassigned
4	Unassigned
5	Unassigned
6	Unassigned
7	Auxiliary left audio +
8	Common auxiliary audio return
9	Unassigned
10	Unassigned
11	Unassigned
12	Unassigned

Other MINI equipment variants

MINI Wave radios and the Alpine Boost CD35 auxiliary insert circuits still need variant-specific verification. The R56 Boost CD above has a separate MOST optical connector where equipped.