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View Full Version : Finally got my sharkfin working properly on my 01 325 (using BT cradle with e815)


sna77
08-09-2005, 01:18 PM
Haaa!! I got it!

Here's the jist of it:

- 2001 325i
- No previous phone kit
- Advanced Autovations BT retrofit kit with OEM snap-in & cradle for Moto e815
- OEM shark fin retrofit

The problem first is discovered when you removed the cup holders, and there is only one wire that runs to the trunk. This wire has a mini-UHF connector on it, and seemingly, runs from under the cup holders to the trunk. According to the install instructions, you put a mini UHF to FAKRA adapter on each end of this cable, (to convert the cable from mini-UHF to FAKRA). One end of the cable goes to the Bluetooth antenna (located under the center console—NOT the external antenna; this antenna communicates with your phone, not a cell tower). The other end of the cable, goes into the BMW ULF mounted in the trunk…

What I’ve discovered, is that that cable first hits a compensator or amplifier buried somewhere in the car. While the cable is usable to make the BT kit work as described, it leaves you with a problem when trying to connect an eject box to an external antenna. The first problem, is that you don’t actually have an antenna cable (newer cars have one already run here). The second issue, as I discovered, is that once you buy and run an antenna cable, you aren’t going to get a signal with a direct connection from the eject box to the shark fin. The signal must go through the compensator!

Here is a list of parts, steps that you need to do in order to make this work…

- Female / Female FAKRA cable (x 2) BMW part #: 84 32 0 138 217 ($15) NOTE: The picture of this part on realoem.com is wrong! Don’t worry about it—the part # is correct.

http://www.bigpatsfans.com/sharkfin/fakra1.jpg

- Male FAKRA to Male mini-UHF adapter (x1) BMW part # 84 11 0 025 711 ($7)

http://www.bigpatsfans.com/sharkfin/fakra2.jpg

- You’re going to need about a 13’ antenna cable. Parag, at Advanced Autovations was kind enough to make me one. You have a few options here. He made me a male – male FAKRA cable (actually, you need a female / female cable, but I told him the wrong thing, so I need some adapters--oops. You could also buy a mini-UHF cable from Radio Shack, etc and use the FAKRA to mini-UHF adapters

Here are the proper steps to make this work.

1. Run antenna cable from the center console to the trunk. This is the most annoying part, so you might as well just get it out of the way now… Use a female to female FAKRA cable if possible.

You should now have 3 cables here. The cable you just ran, the existing mini-UHF cable, and the power connector for the snap-in adapter:

http://www.bigpatsfans.com/sharkfin/connections.jpg

2. Connect the Bluetooth antenna under the armrest to Bluetooth ULF in the trunk. Since I had a male / male cable instead of female / female, I need to use the two of the FAKRA gender changer adapters (217 part #) on each end of the cable.

http://www.bigpatsfans.com/sharkfin/connection1.jpg


3. Now connect the eject box connections. Make sure to change the pin location for your year’s car. My previous instructions show the location of the + / - which is needed to power the connection.

http://www.bigpatsfans.com/sharkfin/fakra3.jpg
http://www.bigpatsfans.com/sharkfin/connection2.jpg


You’re now done with the center console connections (well, you have to put everything back together), so trunk end connections…

First, here are the wires you’re concerned with:
- Antenna cable you just ran to the trunk
- Existing mini-UHF antenna cable
- Antenna cable coming from the shark-fin

http://www.bigpatsfans.com/sharkfin/trunk1.jpg
http://www.bigpatsfans.com/sharkfin/trunk2.jpg

4. Use the female / female FAKRA connector to connect the antenna cable you just ran to the BMW Bluetooth ULF.

http://www.bigpatsfans.com/sharkfin/trunk3.jpg

5. Now use the male FAKRA to male mini-UHF adapter to connect the shark fin to the existing antenna cable

http://www.bigpatsfans.com/sharkfin/trunk4.jpg

That’s it! Look how happy my phone is with a full signal while docked!

http://www.bigpatsfans.com/sharkfin/e815.jpg

md80boy
05-22-2009, 06:40 PM
this was incredibly helpful!

sna77
05-23-2009, 04:11 AM
great! glad someone finally got use from it. Also, there is now an OEM antenna cable part # too.

md80boy
05-25-2009, 05:36 PM
I figured out that I can use the existing antenna cable from the center armrest console to the rear deck as the Bt antenna - I have no intention of using a shark fin.
But what I CANT find is ANY instructions or wiring diagrams or adapter to connect the exisitng 25 pin black connector to the 56 pin big connector on the ULF.
Do you have any help on that you can offer or refer me to?

I have also heard one very big rumor from EIS kits - its that i will need some sort of tiny amplifier wired in so that the radio could use the BT output to the speakers.
They said that without an amp, I wouldnt hear anything.

You have the same experience??

(2001 330ci w/bmw phone prewired)

sna77
05-25-2009, 05:44 PM
I figured out that I can use the existing antenna cable from the center armrest console to the rear deck as the Bt antenna - I have no intention of using a shark fin.
But what I CANT find is ANY instructions or wiring diagrams or adapter to connect the exisitng 25 pin black connector to the 56 pin big connector on the ULF.
Do you have any help on that you can offer or refer me to?

I have also heard one very big rumor from EIS kits - its that i will need some sort of tiny amplifier wired in so that the radio could use the BT output to the speakers.
They said that without an amp, I wouldnt hear anything.

You have the same experience??

(2001 330ci w/bmw phone prewired)

Using the antenna cable for bluetooth antenna is what most people do... Or you can just connect the BT antenna in the trunk. Works fine from way back there...

You need a wiring adapter that will allow you to connect a pre-2002 plug to the Bluetooth ULF's harness.


If you buy the kit from Bimmernav, it includes their kit.
http://www.bimmernav.com/bmw_e46_bluetooth_retrofit.html


Here is my DIY from doing the retrofit about 4 years ago into my 2001:
http://www.bigpatsfans.com/bt/bluetooth.htm

And yes, you definitely need the DC amp on a pre-2002. The bimmernav kit has it wired into their custom harness already.

http://www.bigpatsfans.com/bt/pics/everything.jpg


So... basically you have 2 options for a pre-2002 to add bluetooth:

- buy the bimmernav kit
- make your own harness. If you're an electrical engineer type, you can look at the WDS and figure out the pinouts yourself: http://spaghetticoder.org/bmw/wds/

md80boy
05-28-2009, 05:11 PM
I read your posts some time ago, I'm just having a hard time locating the cables, connectors, and the guidance. I am an engineer actually, but I still dont know where the wires should go when connecting to the ULF.
I'll figure it out!