Which plug goes here? Obc content

[schtozo]

I converted into 13 button obc with everything needed, obc, stack, relay box, and harness but cant seem to find what goes in the empty slot on the relay box. Cooluldnt find any green plug that comes from the car itself.
Does this has something to do with the code feature? Because when i press it it doesnt do anything.

Thanks

[schtozo]

Bump!

[DaveSmed]

The other plug is called C2.

What year is your car?

[twism]

As far as I know this plug is for original alarm system.

If you go to this page -> http://bmwfans.info/parts/catalog/E3...A0386%C2%A0982

you will see number 14 is what I'm talking about. Hope that helps!

[schtozo]

The other plug is called C2.

What year is your car?

My car is a 1991 325i. I see that it has to do with the alarm horn as i thought but why is the code feature not working? The car turns on bypassing the code. So even when i set a code i can turn on the car without entering the 4 digits. WTF???

[DaveSmed]

C2 also pertains to the immobilizer function.

[DaveSmed]

You need to find C104. Its a two pin connector thats back somewhere by the big accessory connector. Has two green wires. Yours will have a jumper plugged into it. You need the harness piece from an OBC car that connects it to the relay box.