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E85 / E86 Z4 (2003-2008)
E85 Z4 Roadster, E86 Z4 Coupe, E85 Z4 M Roadster, and E86 Z4 M Coupe talk with our BMW gurus here.

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  #1  
Old 01-11-2003, 07:10 PM
rasguy1 rasguy1 is offline
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Location: New Jersey
 
Join Date: Jan 2003
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Mein Auto: 1989 E30, 2003 Z4 3.0i
Z4 wiring diagram?

Need to find relatively easy access to 'switched' power so I can hardwire in my Valentine 1. I have the condealed display that I am looking @ mounting in the cigarette lighter bay for a nice, clean install but finding power is the challenge.

Looks like the cigarette lighter adapter & the overhead/dome lights are NOT affected by the car being turned off. I can pull it from the cigarette lighter power cables but if I forget to turn the V1 off it will just sit there & drain the battery = Not Good.

I'll post pics when done.


Thx in advance!
RM
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2003 Triple Black Z4 3.0i
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  #2  
Old 01-11-2003, 07:38 PM
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Ron Stygar Ron Stygar is offline
19,585 Miles
Location: CT
 
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Mein Auto: Z4 M Coupe 6LL93033
Re: Z4 wiring diagram?

Quote:
Originally posted by rasguy1
Need to find relatively easy access to 'switched' power so I can hardwire in my Valentine 1. I have the condealed display that I am looking @ mounting in the cigarette lighter bay for a nice, clean install but finding power is the challenge.

Looks like the cigarette lighter adapter & the overhead/dome lights are NOT affected by the car being turned off. I can pull it from the cigarette lighter power cables but if I forget to turn the V1 off it will just sit there & drain the battery = Not Good.
RM
Ideally you want to wire it to a hot in run and start line. This way, it won't be blasting away while you are parked at the mall, listening to tunes, waiting for your sweetheart.
Not familar with the Z4 yet, but eventualy will be. I assume that they followed their typical color code system.
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  #3  
Old 01-13-2003, 06:36 PM
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TeamM3 TeamM3 is offline
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Mein Auto: a BMW killer
I already gave him that link on another board, given that IMO he should take it to an knowledgable auto electrical specialist and let them handle it.
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  #4  
Old 01-13-2003, 07:51 PM
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Kaz Kaz is offline
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Mein Auto: 01 325iT, 88 M6
I don't know if the main fusepanel is in the dash like on the E46 but it has unused terminals that are:
Always hot
Hot in I
Hot in II

And its fairly simple to get a wire from there to the center stack or anywhere else.

A DMM (or even a testlight) should help in figuring which are which.
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  #5  
Old 01-19-2003, 07:47 AM
rasguy1 rasguy1 is offline
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Location: New Jersey
 
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Mein Auto: 1989 E30, 2003 Z4 3.0i
Solution

Pulled the glovebox out & reviewed the fuse map, choose the SMG fuse (I don't have SMG) and used a Radio Shack Fuse Tap to get switched (+) power, then used a grounded screw in the fuse box for ground.....rest was cake.

Thx for the replies though.

RM
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  #6  
Old 09-27-2013, 05:53 PM
To mace To mace is offline
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Mein Auto: BMW Z4
Car stereo

My name is Tom and I own a 2006 BMW Z4 that I just purchased I went to the BMW dealership in the Las Vegas area. And I inquired what it would cost and what it would take to put the navigation system in my Z4 and the nice gentleman in the parts department Ron Green said probably be better and cheaper to put in a aftermarket stereo in the car. So I went around to a bunch of audio place and ask People open opinion. The BMW stereo is awesome and sounds the best I explain to people I did not want to mess that up so I just want to keep the speakers that were in the car the factory amp thats in the trunk and change out the stereo. I have $1200 invested in a stereo that's not working properly. Now they're telling me that the amp thats in the vehicle will not work and they have to replace that to. now I am so. Worry I am not going to have the surround sound like I had. I need a wiring diagram so I can look at the wiring myself and see if there's anything I can do. If you took the time to read this thank you so much. If you replied to this thank you even more. I seriously need your folks help? Thank you in advance Tom
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  #7  
Old 09-28-2013, 06:08 AM
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shipkiller shipkiller is offline
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Location: Virginia Beach, VA
 
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Posting in a 10 year old thread is bad form.

The amp in your Z4 is not compatible with aftermarket systems. A control signal from the head unit is send by the K-bus to the amplifier. This is a digital signal. Because of this, it is not possible to use an aftermarket head unit together with Top Hifi/Hifi amp or an aftermarket amp (in place of the OEM amp) with the OEM head unit.

Here is the over all wiring diagram: http://www.bmw-planet.com/diagrams/release/en/

Here is just the audio area's of the car: http://www.shipkiller.com:8080/AudioSystem.html
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