Steering wheel button issues after installing an aftermarket stereo in my e85 z4

[Abaddon826]

Hello so I've installed an alpine stereo in my z4 with a wire harness to retain the steering wheel buttons. I came across an issue where my steering wheel buttons work perfectly while my car is in the ON position, but when I start my car I then lose access to them, any help is greatly appreciated! BTW the wire harness I'm using is (SWRBM-57K) from crux.

[bob'smerlot]

I'll bet 'cha they https://cruxinterfacing.com/product/...us-k-line-bus/ could figure it out quicker than we could......

[wdb]

It is possible that you are taking your 12 volts from the wrong source. Different sources have 12 volts on or off depending on key position.

[Abaddon826]

Originally Posted by bob'smerlot

I'll bet 'cha they https://cruxinterfacing.com/product/...us-k-line-bus/ could figure it out quicker than we could......

I did contact them, and we were talking over the phone, they weren't able to help really, they said it might just be my e85

[Abaddon826]

Originally Posted by wdb

It is possible that you are taking your 12 volts from the wrong source. Different sources have 12 volts on or off depending on key position.

I was thinking this same thing, everything is wired how they want color to color, and I was looking at the instructions everything is how it should be, but only in the on position

[Abaddon826]

Originally Posted by wdb

It is possible that you are taking your 12 volts from the wrong source. Different sources have 12 volts on or off depending on key position.

these are the diagrams, only ones it could be are red(ignition) black(ground) yellow(power) and maybe blue(power ant)