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Mk7 Siemens BCM Connector Pin Numbers

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Mk7 Siemens BCM Connector Pin Numbers

Postby Paulioliolio » Wed Jul 01, 2026 4:04 pm

Hi all

I'm trying to fit an aftermarket alarm, the instructions tell me which pins on which connector I need to connect which alarm wire to, but, they do not say which pin is which on the connectors.
Does anyone have an image showing the pin numbers of the C4 GREY connector please?
Also for the C3 BLACK if possible?

The BCM sticker says:
8C1T-14A073-CC
SIEMENS VDO DCUGA
5WK4 8948M

Many thanks,
Paul
Paulioliolio
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Re: Mk7 Siemens BCM Connector Pin Numbers

Postby tranmx2 » Wed Jul 01, 2026 11:59 pm

pin numbers of the C4 GREY connector - Put into g search = AI - in part - If you tell me the make, model, and year of your car, I can provide the exact pinout diagram and wire color codes for your C4 connector.

8C1T-14A073-CC
SIEMENS VDO DCUGA
5WK4 8948M
Put into g search = links and images of BCM.
2012 2.2 TDCi MK 7 E 5 100 HP - 350 3.5 tonne XLWB RWD H3 L4 Duratorq 2.2L CR TC 14 DSL 100/125 PS
Was DRRB 74 KW 100 HP 100 cv. Now CYR5 125 HP. PCM Siemens Continental fuel system.
OBD2 ELM 327 FTDI and Vlinker . Forscan 2.3.46
tranmx2
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Re: Mk7 Siemens BCM Connector Pin Numbers

Postby Paulioliolio » Thu Jul 02, 2026 12:38 pm

Hi
I've done that in every combination I can think of, using different search engines and have not found anything definitive.
AI comes up with a few pin number / colour, / use combinations, but never the full set, and never with the PIN numbering scheme picture.
I was hoping that someone here would actually have known correct diagrams.

Thanks though.
Paulioliolio
Newbie
 
Posts: 4
Joined: Wed Jul 01, 2026 12:45 pm

Re: Mk7 Siemens BCM Connector Pin Numbers

Postby tranmx2 » Thu Jul 02, 2026 2:35 pm

Motorcraft site. There is info on how to. Need to pay but can pay for an hour of viewing. Could video record the screen or do Snippets screen shots. Country put in USA - UK does not link to where you need to go to.
RMS diagnostics uses All data often has transits to work on. Has a big screen to see the schematic dwgs. Pine hollow diagnostics not seen any transits but does have American cars. Forscan works on some of them.
Use gsearch and AI. AI often gets it wrong but you can ask it questions re' the subject - the success demands on how the question is put and what AI finds. It can be quicker that DIY.
2012 2.2 TDCi MK 7 E 5 100 HP - 350 3.5 tonne XLWB RWD H3 L4 Duratorq 2.2L CR TC 14 DSL 100/125 PS
Was DRRB 74 KW 100 HP 100 cv. Now CYR5 125 HP. PCM Siemens Continental fuel system.
OBD2 ELM 327 FTDI and Vlinker . Forscan 2.3.46
tranmx2
Transit Devotee
Transit Devotee
 
Posts: 1632
Joined: Tue Sep 21, 2021 8:51 am


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