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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Relocating the OEM radio to the trunk to retain CHIMES w/ an aftermarket headunit



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      10-22-2014, 06:55 AM   #133
bmw325i
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Quote:
Originally Posted by ctuna View Post
You need an elaborate spoofing setup to get passed this.
The dealership program(ista/p) is an all or nothing black box.
It goes through the whole car and looks at every factory or
BMW installed modules and its not there it chokes.
If there are other modules that attached to radio it looks for those
to.
For example when I took my car in for the seat sensor retrofit they
reprogrammed the whole car.
With a coding setup you just talk to the individual modules.
You can change the vo and code out any options on the most bus you are not using. The reason why the dealer cant code your car without the stock headunit is because the stock headunit acts as a bridge between the can and most bus. The dealer connects using the most access port on the dash, using a coding cable you do not touch the most bus which is why you can still code without a headunit. The stock headunit is the source of the mostbus but not all head units have a most bus. I didn't relocate my headunit either and I've never been to a bmw dealer but it is a good idea for some people. If you have BMW assist relocating the head unit is necessary to keep that.

I'm glad all this information ended up in the same thread. It's hard to answer everyone's questions on replacing the head unit especially since it is different for each car.
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      10-22-2014, 10:29 AM   #134
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On the cars before 2010 I thought they used canbus

On the cars before 2010 I thought they used canbus
for at least diags and some programming . I have a copy of
DIS57 and it works for diags through the OBD port using the can
bus. I can code using that cable but I never got the BMW programming
program to work through it. However it works fine with NCSexpert.
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      10-22-2014, 12:34 PM   #135
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Quote:
Originally Posted by ctuna View Post
On the cars before 2010 I thought they used canbus
for at least diags and some programming . I have a copy of
DIS57 and it works for diags through the OBD port using the can
bus. I can code using that cable but I never got the BMW programming
program to work through it. However it works fine with NCSexpert.
From what I understand they connect using the most access port and the headunit is what allows them to access the can bus. Maybe they can do certain things through obd since not all cars have a most bus.
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      10-27-2014, 02:39 AM   #136
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Quote:
Originally Posted by bmw325i View Post
If you go with an aftermarket amp/processor you will have to use the RCA outputs instead of speaker level outputs. I'd suggest leaving the rear speakers unamped.
yeah, personally i'm going an aftermarket head unit too though, alpine HU, alpine processor. easy lol

though that way, i think it disables the normal output, so not really useful for keeping rear speakers.
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      10-27-2014, 04:15 AM   #137
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Quote:
Originally Posted by flinchy View Post
yeah, personally i'm going an aftermarket head unit too though, alpine HU, alpine processor. easy lol

though that way, i think it disables the normal output, so not really useful for keeping rear speakers.
You do not necessarily need to have the rear speakers connected to the head unit if you just wanted the chimes. You could even add a separate set of rear speakers if you wanted them.
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      11-18-2014, 05:49 PM   #138
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Used this one for my 2009.... Chimes work and also gives me an accessory and NAV outputs.

http://www.metraonline.com/part/BMRC-01
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      06-08-2017, 07:27 AM   #139
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I just bought a 2007 328i and was looking at possibly installing an aftermarket stereo. I had the stereo in my vehicle before buying the BMW, it is a Pioneer AVH-4100NEX. I am just trying to understand all that will be needed to install the stereo and keep all the existing functions. Will I just need the 2 metra wiring harnesses? I also found a connects2 installation kit. Would it be better to buy the connects2 kit?
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      06-29-2017, 07:20 AM   #140
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So I have been searching all through the forum and I just want to make sure of what is needed to install an aftermarket HU and relocate the OEM HU to the trunk. I have seen a couple different options and would really appreciate the help in knowing exactly what to get. Below I listed what I've seen.

- Metra 70-9003 w/ Metra 71-9003
- I also saw that it would be needed to buy the optical wire to add to the metra 71-9003

- There were a couple different Connects2 options but it seems like everything comes with this one part number CTSBM009.2

- LC-BMRC-01 w/ ASWC-1

Those were the main things I've been seeing. I am wanting to keep all the chimes, SOS, warning lights and OEM HU for software updates. Would the connects2 be able to do all that with just the one part number? Is one of those options better than the other? Any help would be greatly appreciated.
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      09-01-2019, 04:23 PM   #141
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Couple questions about the MOST and CANBUS in relation to relocating the head unit.

1. Does it matter where in the MOST ring the headunit is connected? i.e. does it have to be right after the diagnostic plug in the driver's footwell?

2. Is the CAN bus a fully parallel connected bus? In other words can I connect the OEM head unit anywhere I can tap CAN-H and CAN-L? I'm asking because it looks like the CAN signals are in a harness near the right rear shock tower where the PDC would be located. Thinking it might easier to tap that vs. running wires all the way from the front console.
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      09-01-2019, 04:47 PM   #142
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1) no it does not matter its a ring the modules just need
to be in the active ring.

2) Don't know there may be more than one can bus
At the beginning of this thread they tell you where to tap it.

https://www.newtis.info/tisv2/a/en/

BMW stereo types
http://www.e90post.com/forums/showthread.php?t=352586
http://www.e90post.com/forums/attach...2&d=1266451970
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/showthread.php?t=343673
http://www.e90post.com/forums/showthread.php?t=138949
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/attach...1&d=1209780865
http://www.e90post.com/forums/showthread.php?t=641323
http://bmwcoders.com/forum/3-er-8/bm...1-e92-e93-291/
http://technicpnp.com/menuDiagrams/d...e90_92_93.html
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...3&d=1169133185
http://www.e90post.com/forums/attach...4&d=1278871872

electical e90 pdf
http://www.google.com/url?sa=t&rct=j...,d.cGU&cad=rja
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
http://www.google.com/url?sa=t&rct=j...85464276,d.cGU
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      09-07-2019, 07:02 PM   #143
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Quote:
Originally Posted by srcstc View Post
There is a 41 Pin connector in the driver's side footwell (pass side if your car is RHD). Tap into Pin # 3 for Ignition. Use a relay.
I can’t find it. Do you know which color the wire is ? Mine is RHD
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      09-08-2019, 09:00 PM   #144
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Quote:
Originally Posted by srcstc View Post
There is a 41 Pin connector in the driver's side footwell (pass side if your car is RHD). Tap into Pin # 3 for Ignition. Use a relay.
in my connector i dont have any wire in pin 3 its empty. what kind of pin do i need and even if i put a pin i doubt it will work? any suggestions or work around.
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      10-28-2019, 08:54 PM   #145
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Thought I would write a follow up to my install.

1. Ran an ethernet cable from the radio harness up front to the trunk.
The cable carries CAN-L, CAN-H, 12V and Ground. The 12V and Ground supply use two wires each from the ethernet cable to ensure there's enough current carrying capacity. The other nice thing about ethernet cable is that it's twisted pairs, just like the CAN wiring:

i. Green - CAN-L to Pin 9 on the Metra harness (Brown/yellow stripe)
ii. White Green for CAN-H to Pin 11 on the Metra harness (Orange/Brown stripe)
iii. Blue/White Blue for +12V to Pin 15 on the Metra harness (Yellow)
iv. Brown/ White Brown for Ground to Pin 12 on the Metra harness (Black)
v. Orange for Reverse Camera trigger [In the end this was not used. The camera video cable came with a red 12V trigger wire]
vi. White Orange – unused

Note: my Metra harness came with no wire in Pin 11. I moved the one from Pin 13.


2. I put the radio in to a cut up plastic battery tray and used galvanized strap to create a mounting tray. Thank God we have Princess Auto up here in Canada.


3. Mounting location... as others have said there's really no good location. But I found something that's out of the way yet still accessible: the underside of the rear deck, next to the folding seat release handle.

4. MOST cables:
I considered two possible options (thanks ctuna )
(1) Just run an extension cable from the radio connector at the front to the mounting location in the trunk. This requires a fairly long 5 meter MOST extension cable. You can get these off Aliexpress for $25-$30.
(2) Use a Y-cable with two female MOST connectors, a female diagnostic loop on the radio connector, and a smaller (2 meter) extension cable to connect your radio to the Y-cable and whatever you have in the trunk (Sat radio, TCU, MULF, etc.). This is the option I went with.
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Last edited by Canuck335; 10-31-2019 at 03:02 PM.. Reason: Reduced image sizes and added MOST cabling
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      04-17-2020, 01:27 AM   #146
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Could anyone provide a current picture of the wiring diagram considering the old ones don't show up anymore? I've ordered both harnesses and an LCI radio I have logic 7 with Eonon head unit the only reason I'm doing this is to change to the newer chime as I have the old plaid out ding noise.
I should also mention I don't have the SOS enabled nor to I plan to. This may sound dumb but literally the only reason I'm doing this is to hear the nice wonderful bmw chime that makes me happy and feel WAY more boujee then I actually am in my 13 year old bimmer
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      04-17-2020, 02:50 PM   #147
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The wiring diagram for what.
The wiring hasn't changed.

https://www.newtis.info/tisv2/a/en/

https://pinoutguide.com/Car-Stereo-A...3_pinout.shtml

https://www.google.com/search?q=e90+...COFne-zeBULGM:

head unit
http://www.e90post.com/forums/showth...ight=head+unit
http://www.e90post.com/forums/showthread.php?t=1457320
http://www.e90post.com/forums/showthread.php?t=1036190
http://www.e90post.com/forums/showth...hlight=dynavin
http://www.janus-design.net/english/
http://www.e90post.com/forums/showthread.php?t=355089
http://www.e90post.com/forums/showth...ight=head+unit
http://www.e90post.com/forums/showth...hlight=dynavin
http://www.e90post.com/forums/showth...hlight=dynavin
http://www.e90post.com/forums/showth...light=retrofit
http://www.e90post.com/forums/showthread.php?t=993447
http://www.e90post.com/forums/showthread.php?t=1016187
https://www.bmwgm5.com/Logic7_E90_91_92_93.htm
http://www.e90post.com/forums/showth...hlight=dynavin

Last edited by ctuna; 04-17-2020 at 02:58 PM..
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      04-17-2020, 03:37 PM   #148
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The original post had pictures in it which don't show anymore due to the age of the post, was asking for a new set
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      04-17-2020, 05:54 PM   #149
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Yeah a lot of those early pictures used photobucket and they changed
there free policy . Also which browser you use may effect if you
can see the photo's. There were a few add on's that overcame the problem
on some posts .
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      04-18-2020, 03:08 PM   #150
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Basically I have an 07 335i with the old style "gong" which is simply just a subtle dinging noise. When I was looking into upgrading to the wonderful bmw gong I saw that all it took was swapping to the LCI radio and coding in the gong. Not hard got it to work no issues. But as soon as I swapped in my eonon system it went to a horrible eonon gong so I went back to the stock boring dinging. Now I have the LCI radio, metra 71 and 70 and I just want to relocate the unit to the trunk just so I can upgrade to the LCI gongs. I don't care about the dealer being able to code my car as it's 13 years old and they're not going to touch my car and I have coded out the sos error because I could care less about it...
Will I still be able to have steering wheel functionality as I do now?
Also how am I going to get the can bus cables connected into the eonon system without removing the connected controls?
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      04-21-2020, 10:04 AM   #151
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Quote:
Originally Posted by TGWorkbench View Post
Will I still be able to have steering wheel functionality as I do now?
Also how am I going to get the can bus cables connected into the eonon system without removing the connected controls?
Yes, you'll still have steering wheel controls.
IIRC I tapped the connector for the CANBUS adapter (the little red box on the Eonon harness). You'll need to wire the CAN-H, CAN-L, Power and Ground wires from this connector. You can use t-taps. Or if you have the tools and skills remove the pins from the connector and solder wires to the tops of the pins. Then re-insert the pins (takes lots of notes and pictures where the pins go back in, and do only one pin at a time).

For the gong you will also need to run the speaker connection from your HU back to the front (or a new speaker mounted in the back). Take a look at TIS for the wiring for your specific car.
https://www.newtis.info/tisv2/a/en/e90-335i-lim/
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      04-22-2020, 07:40 PM   #152
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Quote:
Originally Posted by Canuck335 View Post
Yes, you'll still have steering wheel controls.
IIRC I tapped the connector for the CANBUS adapter (the little red box on the Eonon harness). You'll need to wire the CAN-H, CAN-L, Power and Ground wires from this connector. You can use t-taps. Or if you have the tools and skills remove the pins from the connector and solder wires to the tops of the pins. Then re-insert the pins (takes lots of notes and pictures where the pins go back in, and do only one pin at a time).

For the gong you will also need to run the speaker connection from your HU back to the front (or a new speaker mounted in the back). Take a look at TIS for the wiring for your specific car.
https://www.newtis.info/tisv2/a/en/e90-335i-lim/
Awesome! Thank you so much. Going to start this tomorrow, wanted to make sure that I had to splice them like i thought. Will give y'all an update when I get it working for those in my dilemma.
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      08-17-2020, 04:15 PM   #153
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Quote:
Originally Posted by Canuck335 View Post
Quote:
Originally Posted by TGWorkbench View Post
Will I still be able to have steering wheel functionality as I do now?
Also how am I going to get the can bus cables connected into the eonon system without removing the connected controls?
Yes, you'll still have steering wheel controls.
IIRC I tapped the connector for the CANBUS adapter (the little red box on the Eonon harness). You'll need to wire the CAN-H, CAN-L, Power and Ground wires from this connector. You can use t-taps. Or if you have the tools and skills remove the pins from the connector and solder wires to the tops of the pins. Then re-insert the pins (takes lots of notes and pictures where the pins go back in, and do only one pin at a time).

For the gong you will also need to run the speaker connection from your HU back to the front (or a new speaker mounted in the back). Take a look at TIS for the wiring for your specific car.
https://www.newtis.info/tisv2/a/en/e90-335i-lim/
Quote:
Originally Posted by Canuck335 View Post
Quote:
Originally Posted by TGWorkbench View Post
Will I still be able to have steering wheel functionality as I do now?
Also how am I going to get the can bus cables connected into the eonon system without removing the connected controls?
Yes, you'll still have steering wheel controls.
IIRC I tapped the connector for the CANBUS adapter (the little red box on the Eonon harness). You'll need to wire the CAN-H, CAN-L, Power and Ground wires from this connector. You can use t-taps. Or if you have the tools and skills remove the pins from the connector and solder wires to the tops of the pins. Then re-insert the pins (takes lots of notes and pictures where the pins go back in, and do only one pin at a time).

For the gong you will also need to run the speaker connection from your HU back to the front (or a new speaker mounted in the back). Take a look at TIS for the wiring for your specific car.
https://www.newtis.info/tisv2/a/en/e90-335i-lim/
Okay so here's what I'm faced with. I found the pins on the little red box, now when I run those wires to the back which one of these am I wiring them into and then which wires to be specific? Power and ground are obvious but what about can h and l?
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      08-19-2020, 09:47 PM   #154
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Quote:
Originally Posted by TGWorkbench View Post
Okay so here's what I'm faced with. I found the pins on the little red box, now when I run those wires to the back which one of these am I wiring them into and then which wires to be specific? Power and ground are obvious but what about can h and l?
Take a look at post 52 in this thread.
https://www.e90post.com/forums/showp...4&postcount=52
It shows which pins are CAN-L and CAN-H.

*** But *** make sure it's the same on your car.
I'm not sure if BMW moved CAN-L and CAN-H around on different models and years.

The newtis diagram should show which wires are the CAN signals.
For example here's the diagram for 335 sedans
https://www.newtis.info/tisv2/a/en/e...-radio/iBfL490

The wire colours will be Green (CAN-L) and Orange/Green (CAN-H).
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