Hi all fans! 
This is my first post, so bear with me.
I have a BMW e46 330CI Cabrio SMG from 2003
I have some plans to install a new aftermarket radio (Pioneer AppRadio 4 - SPH-DA120)
So therefore i have some questions for you
Right now, i have all the original equipment:
- 2 DIN Navigation/radio with Casette tape & with 6 steps CD box back at the trunk
- Harman Kardon stereo (with Amp.) with subwoofer
- Steering Wheel Control
1. Question:
which wire harness adapter do i need? There is 3 types. Or do i even need one of these?:
- 17 pin connector http://www.ebay.com/itm/PC2-05-4-BM...890?pt=LH_DefaultDomain_3&hash=item3a87d1c952
- 40-pin connector http://www.ebay.com/itm/PC2-75-4-BM...683?pt=LH_DefaultDomain_3&hash=item3cd8f05863
- Wire Harness with RCA cables http://www.ebay.com/itm/PC9-405-BMW...063?pt=LH_DefaultDomain_3&hash=item2a1f28677f
2. Question:
Which Steering Wheel Control adapter do i need?
My App Radio 4 has a jack input for steering wheel connection, so is it like this one?: http://www.ebay.co.uk/itm/PIONEER-C...ad-DS-BM003-/270895600272?hash=item3f12a2d290
3. Question:
Do i need to rewire some cables when i have the Harman Kardon system, or the 16:9 Navigation radio, because when i see the factory radio cable (for the standard 16:9 Navigation radio), it looks like this:
- I also read something with the RCA Voltage etc.?
4. Question:
When i removed the factory Navigation radio, and turn on the ignition (or start the car) the radio/tuner is still playing. Then i think, it's because of the Tuner that are located somewhere at the trunk or?
- but when i have to connect the aftermarket App Radio 4, how do i connect the radio/tuner with the wire? And does the Tuner and App radio musik overlap each other?
I have cutted the AC vents/duct so the new aftermarket App Radio 4 will fit in now (does not looks like a million
More picture is comming)
Cutting the plastic AC vents/duct
Maked a case, bechause you have to close the AC vents/duct again.
!!! PICTURE COMMING TODAY !!!
Could you guys please help me in this situation, because i really want to install this asap, and also make a usefull guide with all pictures step by step to you later
I have searched in the forum and find too many "diffrence" solutions/fixes how to install a aftermarket radio.
NOTE: Yes i know a lot of things about stereo/radio's etc., but i havn't tried/seen these cable before, so i need experience from some who has done this, or can give me the correct wiring diagram for my BMW 330CI Cab. SMG
Thanks all, hope you can answer some or all the questions
!
Best Regards:
Jacob Lundgaard
/Denmark
This is my first post, so bear with me.
I have a BMW e46 330CI Cabrio SMG from 2003
I have some plans to install a new aftermarket radio (Pioneer AppRadio 4 - SPH-DA120)
So therefore i have some questions for you
Right now, i have all the original equipment:
- 2 DIN Navigation/radio with Casette tape & with 6 steps CD box back at the trunk
- Harman Kardon stereo (with Amp.) with subwoofer
- Steering Wheel Control


1. Question:
which wire harness adapter do i need? There is 3 types. Or do i even need one of these?:
- 17 pin connector http://www.ebay.com/itm/PC2-05-4-BM...890?pt=LH_DefaultDomain_3&hash=item3a87d1c952
- 40-pin connector http://www.ebay.com/itm/PC2-75-4-BM...683?pt=LH_DefaultDomain_3&hash=item3cd8f05863
- Wire Harness with RCA cables http://www.ebay.com/itm/PC9-405-BMW...063?pt=LH_DefaultDomain_3&hash=item2a1f28677f
2. Question:
Which Steering Wheel Control adapter do i need?
My App Radio 4 has a jack input for steering wheel connection, so is it like this one?: http://www.ebay.co.uk/itm/PIONEER-C...ad-DS-BM003-/270895600272?hash=item3f12a2d290
3. Question:
Do i need to rewire some cables when i have the Harman Kardon system, or the 16:9 Navigation radio, because when i see the factory radio cable (for the standard 16:9 Navigation radio), it looks like this:

- I also read something with the RCA Voltage etc.?
4. Question:
When i removed the factory Navigation radio, and turn on the ignition (or start the car) the radio/tuner is still playing. Then i think, it's because of the Tuner that are located somewhere at the trunk or?
- but when i have to connect the aftermarket App Radio 4, how do i connect the radio/tuner with the wire? And does the Tuner and App radio musik overlap each other?
I have cutted the AC vents/duct so the new aftermarket App Radio 4 will fit in now (does not looks like a million
Cutting the plastic AC vents/duct

Maked a case, bechause you have to close the AC vents/duct again.
!!! PICTURE COMMING TODAY !!!
Could you guys please help me in this situation, because i really want to install this asap, and also make a usefull guide with all pictures step by step to you later
I have searched in the forum and find too many "diffrence" solutions/fixes how to install a aftermarket radio.
NOTE: Yes i know a lot of things about stereo/radio's etc., but i havn't tried/seen these cable before, so i need experience from some who has done this, or can give me the correct wiring diagram for my BMW 330CI Cab. SMG
Thanks all, hope you can answer some or all the questions
Best Regards:
Jacob Lundgaard
/Denmark