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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 01-20-2010, 09:22 PM   #1
mvrk10256
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Question steering wheel buttons + radar detector button question

So i have an x50, and I am planning on hardwiring it this weekend. the stock x50 socket plug has a red(+12v)wire, a green (ground) wire and a black (mute?) button wire. I bought a phone cable and am planning on wiring the power and ground from the headliner location. I am pretty sure about how to do this due to a very helpful diy.


However my question is the mute button. It would be cool to have a mute button wired to say one of the buttons (phone icon, or R/t) that dont do anything on my steering wheel. I know about the rotary cuff, and would tap that line into a pre existing button.

Has anyone done anything like this? can i tap into those buttons if they currently dont do anything (ie if i tap them will they do nothing?) how hard is it to get to there? i mean i am not scared of by difficulty, but if this is impossible, then i want to know straight up.


Thanks in advance.
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Old 01-20-2010, 10:05 PM   #2
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anyone do anything of this sort? maybe if anyone can just tell me if those buttons that dont "function" are prewired?
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Old 01-21-2010, 01:10 AM   #3
NikolaiD
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Those buttons are all on the iBus line.
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Old 01-21-2010, 02:09 PM   #4
mvrk10256
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Quote:
Originally Posted by NikolaiDelov View Post
Those buttons are all on the iBus line.
Thanks. I will probably end up building a seperate mute button onto the little plastic ASC pannel.

Does anyone know if the mute button is always on signal and when you push it, it disrupts it or if its usually no signal and during the push it send a 12V pulse?


Also any recomendation on switches? was going to radioshack and use a momentary button switch.
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Old 01-21-2010, 02:35 PM   #5
JWL-SC
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I have an escort X50. And all I did was run the standard plug across the dash in the vent, under the dash and up under the shifter into the cig lighter.It is real clean no wires show. An easy to reach the mute button.

Photobucket

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Old 01-21-2010, 02:39 PM   #6
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that looks good, but i must say i kinda want to be able to close the tray. you have a GPS mounted in there so its ok. however i found this on another forum

Just took apart my "smartcord" for my new escort 8500 radar detector.
(Best Buy has them one sale this week.)

Info for those of you doing hardwire installations.


Looking at the contacts with the wire at the bottom:

Yellow|Green|Red|Black




Red = fused +12V
Green = Ground
Yellow and Black are the wiring for the switch and the LEDs.

For a remote mute button put a 470 ohm resistor in series with a normally open pushbutton switch between the green and yellow wires.

For a remote alert LED, you must use a transistor to switch the LED. The simplest option would be to steal the PCB from the factory adapter.

I have a schematic for the adapter, but no scanner at the moment. PM me if anyone needs more details.

Hopefully this is useful to someone.

http://www.radioshack.com/product/in...ilterName=Type
http://www.radioshack.com/product/in...ductId=2102782
http://www.radioshack.com/product/in...ductId=2062320

i am going to do it this weekend and maybe make a DIY out of it.

we will see how it goes. Thanks for the great alternative though.
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