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Discussion Starter #1
I have recently bought a nice 147.
The head unit was removed and I am planning to install a new one (not a factory one).However there are a lot of jacks coming out of the dashboard.I have tried to take pictures of all of them using my cell phone.The pictures as you can imagine are not very good however I would appreciate any help related to these jacks.

I have managed to figure out that one of the jacks is for the steering wheel controls (I really want to keep the steering wheel controls). I found that info in the forum. Also I guess the small green jack is the aerial(pic6). Apart from that I have no idea what the other cables are about.

Thank you in advance.
 

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AO Silver Member, 155 Lounge Winner 09
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it looks like a mix of factory and aftermarket plugs. what headunit has been installed? i'm not expecting it to be the original, so please confirm, as this will greatly help me understand what is what.

but as it is, it looks like:

pic 001.jpg = aftermarket headunit plug, possibly alpine
pic 003.jpg = looks like an aftermarket wiring adaptor harness with the associated labelling
pic 004.jpg = 3x mini-ISO factory plugs (BLUE = CD changer if applicable; GREEN = steering wheel controls + telephone connections if applicable; YELLOW = remote output wire for Bose amp if applicable; however, these can vary if the original factory unit was satnav); other bigger plug...unsure
pic 006.jpg = GSM(phone) antenna plug
pic 007.jpg = BLACK double-ISO plugs look like where the factory plug should be for the powerwiring and speakerwiring to the factory headunit

so my guess is that there was an aftermarket headunit fitted. and that there is an aftermarket wiring adaptor harness connected onto the end of the factory black double-ISO plug, ending in the plug in pic 001.jpg.

the original headunit may have been the Connect+ GPS/phone unit, which would have used the double-ISO plug, the white plug in 005.jpg, and the green antenna plug (and probably also a grey one that is similar).

if you can help decipher this, it would be great! :D

:)
pic 005.jpg = factory plug for satnav headunit
 

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Discussion Starter #3
it looks like a mix of factory and aftermarket plugs. what headunit has been installed? i'm not expecting it to be the original, so please confirm, as this will greatly help me understand what is what.

but as it is, it looks like:

pic 001.jpg = aftermarket headunit plug, possibly alpine
pic 003.jpg = looks like an aftermarket wiring adaptor harness with the associated labelling
pic 004.jpg = 3x mini-ISO factory plugs (BLUE = CD changer if applicable; GREEN = steering wheel controls + telephone connections if applicable; YELLOW = remote output wire for Bose amp if applicable; however, these can vary if the original factory unit was satnav); other bigger plug...unsure
pic 006.jpg = GSM(phone) antenna plug
pic 007.jpg = BLACK double-ISO plugs look like where the factory plug should be for the powerwiring and speakerwiring to the factory headunit

so my guess is that there was an aftermarket headunit fitted. and that there is an aftermarket wiring adaptor harness connected onto the end of the factory black double-ISO plug, ending in the plug in pic 001.jpg.

the original headunit may have been the Connect+ GPS/phone unit, which would have used the double-ISO plug, the white plug in 005.jpg, and the green antenna plug (and probably also a grey one that is similar).

if you can help decipher this, it would be great! :D

:)
pic 005.jpg = factory plug for satnav headunit
The problem is I bought the car like this. There was no head unit. I have no idea what head unit was previously installed. However I believe there was an aftermarket unit.

The car has steering wheel controls but it does not have phone and nav system.

Pic 001 and 003 is one and the same thing - there is a big black jack which you probably call black double iso plug and the wires from that plug go directly to the plug on pic 001. I believe this was used for an aftermarket unit. There is labelling on two of the wires - BATTERY 15A and ACC. I am not sure what this means.

The green blue and yallow plugs (pic 004) are probably as you mentioned for the steering controls (green) and phone. I have no idea what is the white plug on the same picture for.

pic 006 - it should be radio antenna coz i do not have a phone with the car. What do you think?

pic 005 - this is another white plug which makes no sense to me. Any ideas?

Again I would like to mention that there is no phone, no nav and I believe the original head unit was not bose (there are no bose marks on any of the speakers).

Any help is greatly appreciated.

Thank you.
 

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AO Silver Member, 155 Lounge Winner 09
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However I believe there was an aftermarket unit.
cool, it makes sense.

Pic 001 and 003 is one and the same thing - there is a big black jack which you probably call black double iso plug and the wires from that plug go directly to the plug on pic 001. I believe this was used for an aftermarket unit. There is labelling on two of the wires - BATTERY 15A and ACC. I am not sure what this means.
yes, there appears to be a wiring adaptor harness connected to the black double-ISO plug, ending with the white plug.

the adaptor harness can be removed, leaving you with the standard ISO plugs.

The green blue and yallow plugs (pic 004) are probably as you mentioned for the steering controls (green) and phone. I have no idea what is the white plug on the same picture for.
no idea about the white plug either.

pic 006 - it should be radio antenna coz i do not have a phone with the car. What do you think?
the cabling/wiring would have been 'universal' to suit different alfa's of different spec and markets. my alfa GT had similar, a green and grey plug like these. they are definitely for GPS/GSM, even though that is not offered here in australia.

your car will have an additional antenna cable for the radio, ending in an ISO connection: http://www.siocommunications.co.uk/Autoleads_files/DIN-ISO-pic.jpg

pic 005 - this is another white plug which makes no sense to me. Any ideas?
again, i think that is for the Connect+ system. like the green/grey antenna plugs, not always used in the car, depending upon spec/market.

regardless, your car has all the necessary plugs to fit a new HU:

1. power-ISO plug: half the wires in the double-plug are for powerwiring
2. speakerwire-ISO plug: the other half are to the speakers
3. mini-ISO plugs: incl connection for steering wheel controls
4. antenna ISO plug: not in your pics, but presumably still somewhere behind the dash

the other (white) plugs are not required for a new headunit.

to fit the new unit, it may suit the power/speakerwire ISO plugs directly. or it may need a wiring adaptor harness similar to what is already fitted. just that different brands of headunit require a different style of harness, so the one you have may not match the brand headunit you buy (as i say, it looks like it could be an alpine one, but not 100% sure).

at the end of the day, are you going to have a new headunit professionally installed? if so, they will sort it out. or are you going to DIY - cos you'll need to have a full understanding of what's what first.

:)
 

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Discussion Starter #5
cool, it makes sense.



yes, there appears to be a wiring adaptor harness connected to the black double-ISO plug, ending with the white plug.

the adaptor harness can be removed, leaving you with the standard ISO plugs.



no idea about the white plug either.



the cabling/wiring would have been 'universal' to suit different alfa's of different spec and markets. my alfa GT had similar, a green and grey plug like these. they are definitely for GPS/GSM, even though that is not offered here in australia.

your car will have an additional antenna cable for the radio, ending in an ISO connection: http://www.siocommunications.co.uk/Autoleads_files/DIN-ISO-pic.jpg



again, i think that is for the Connect+ system. like the green/grey antenna plugs, not always used in the car, depending upon spec/market.

regardless, your car has all the necessary plugs to fit a new HU:

1. power-ISO plug: half the wires in the double-plug are for powerwiring
2. speakerwire-ISO plug: the other half are to the speakers
3. mini-ISO plugs: incl connection for steering wheel controls
4. antenna ISO plug: not in your pics, but presumably still somewhere behind the dash

the other (white) plugs are not required for a new headunit.

to fit the new unit, it may suit the power/speakerwire ISO plugs directly. or it may need a wiring adaptor harness similar to what is already fitted. just that different brands of headunit require a different style of harness, so the one you have may not match the brand headunit you buy (as i say, it looks like it could be an alpine one, but not 100% sure).

at the end of the day, are you going to have a new headunit professionally installed? if so, they will sort it out. or are you going to DIY - cos you'll need to have a full understanding of what's what first.

:)
I was planning to install a head unit myself. However I am now confused. First I cannot find another antenna plug but I will look again. Also I thought the harness adaptor is universal one and it will fit anything I buy now it seems it does not work like that. Apart from that I am not sure I can unplug the harness adaptor. It seems the wires come from inside the big ISO plug and there is no way to unplug them.
There are a couple of plugs we know nothing about...

It seems that if I want to install it myself I have to figure out what unit is the harness adaprot suitable for....

Thank you very much for your help.
 

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AO Silver Member, 155 Lounge Winner 09
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I was planning to install a head unit myself.
that's ok. you should do some more reading in this forum. particularly about the powerwires, at positions #7 and #4. in the alfa, they are swapped around compared with the standard ISO wiring pattern. so wire #7 is the main powerwire (aka 'constant') and must go to the YELLOW powerwire on the new headunit. not all alfa's have a wire at #4, but if so, it is the 'switched' +12V wire, to go to the RED (aka 'ACC'essories) wire on the new headunit. this has been described in many different threads here.

First I cannot find another antenna plug but I will look again.
it should be there, maybe tucked away.

note, other brands of car do use similar connections like the green one for the antenna, but i'm almost certain it won't be the case in your car (not in my old 156 nor in my current GT).

Also I thought the harness adaptor is universal one and it will fit anything I buy now it seems it does not work like that. Apart from that I am not sure I can unplug the harness adaptor. It seems the wires come from inside the big ISO plug and there is no way to unplug them.
without seeing the plugs, i cannot be certain. but an adaptor wiring harness usually simply plugs to the original ISO plugs, and should be easy enough to unplug (and changed to a different adaptor if necessary).

check carefully, but the harness should easily unclip by pressing the release tabs.

There are a couple of plugs we know nothing about...
as mentioned, they should have no relevance to fitting a new headunit (unless the original plugs have been modified/altered).

It seems that if I want to install it myself I have to figure out what unit is the harness adaprot suitable for....
visit a specialist ICE store for advice; perhaps an alpine one. they will recognise what it suits.

but i'm confident the adaptor harness can be removed from the factory ISO plugs.

:)
 

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Discussion Starter #7
that's ok. you should do some more reading in this forum. particularly about the powerwires, at positions #7 and #4. in the alfa, they are swapped around compared with the standard ISO wiring pattern. so wire #7 is the main powerwire (aka 'constant') and must go to the YELLOW powerwire on the new headunit. not all alfa's have a wire at #4, but if so, it is the 'switched' +12V wire, to go to the RED (aka 'ACC'essories) wire on the new headunit. this has been described in many different threads here.



it should be there, maybe tucked away.

note, other brands of car do use similar connections like the green one for the antenna, but i'm almost certain it won't be the case in your car (not in my old 156 nor in my current GT).



without seeing the plugs, i cannot be certain. but an adaptor wiring harness usually simply plugs to the original ISO plugs, and should be easy enough to unplug (and changed to a different adaptor if necessary).

check carefully, but the harness should easily unclip by pressing the release tabs.



as mentioned, they should have no relevance to fitting a new headunit (unless the original plugs have been modified/altered).



visit a specialist ICE store for advice; perhaps an alpine one. they will recognise what it suits.

but i'm confident the adaptor harness can be removed from the factory ISO plugs.

:)
You were right about the other antenna. I found it! So now I have everything I need to install a new head unit.

I checked the adaptor harness and I will be able to unplug the 2 ISO plugs. I also examined the power wires (#4 and #7)that you mentioned and I am pretty confident someone replaced them as you have explained previously. So everything seems ready and I just have to figure out what audio will fit the harness adaptor. I will probably unplug it and take it to the local audio store and see what they will suggest.

However I checked ebay and there were just a few options for connecting the steering wheel controls. I think there were adaptors for panasonic, clarion and kenwood only. I hope the adaptor harness will fit one of these otherwise I will have to start from scratch.

Thanks a bunch for your help
 

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AO Silver Member, 155 Lounge Winner 09
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wiring adaptor harnesses are readily available for the major brands of headunit, so if the existing one doesn't match, simply buy a new one. they are cheap.

if you like alpine, then many of their models including an inbuilt steering wheel interface. this means you simply make the connection to the alfa GREEN mini-ISO plug and programme the 'learning' interface in the headunit. it is easy, and explained in the owner's manual. making the physical connection requires some minor modification cos the alpine headunits do not have a mini-ISO plug, but bullet terminals. easy enough to convert on or the other.

the relevant models include: CDA-9884R/9886R/9887R and iDA-X100.

http://www.alpine-electronics.co.uk/index.php?id=7

otherwise, most other brands require a separate interface, which usually costs an extra UK$40~60. obviously ensure the model headunit you buy has the appropriate input for steering wheel controls. usually only the mid and highspec models have this feature, to be compatible with the steering wheel controls.

:)
 

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Discussion Starter #9 (Edited)
wiring adaptor harnesses are readily available for the major brands of headunit, so if the existing one doesn't match, simply buy a new one. they are cheap.

if you like alpine, then many of their models including an inbuilt steering wheel interface. this means you simply make the connection to the alfa GREEN mini-ISO plug and programme the 'learning' interface in the headunit. it is easy, and explained in the owner's manual. making the physical connection requires some minor modification cos the alpine headunits do not have a mini-ISO plug, but bullet terminals. easy enough to convert on or the other.

the relevant models include: CDA-9884R/9886R/9887R and iDA-X100.

http://www.alpine-electronics.co.uk/index.php?id=7

otherwise, most other brands require a separate interface, which usually costs an extra UK$40~60. obviously ensure the model headunit you buy has the appropriate input for steering wheel controls. usually only the mid and highspec models have this feature, to be compatible with the steering wheel controls.

:)
Here is what I was looking at the other day:

http://cgi.ebay.co.uk/ALFA-147-STEERING-WHEEL-CONTROL-ADAPTOR-LEAD-PANASONIC_W0QQitemZ320228417455QQcmdZViewItem?hash=item320228417455&_trkparms=72:984|39:1|66:2|65:12|240:1318&_trksid=p3286.c0.m14

I guess I need something like this to make my steering wheel controls work with a unit like this for example:

Panasonic CQ-RX200N CD/MP3 CAR RADIO review cheap prices CQ-RX200N CD/MP3 CAR RADIO Panasonic best buy discount online uk shop

This is just an example and I have picked this one beause the tech info page says it is compatible with steering wheel controls.

Am I right??
 

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AO Silver Member, 155 Lounge Winner 09
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if you like panasonic, then that should be fine. panasonic are 'good' btw, so no probs there.

though i personally prefer alpine and pioneer.

:)
 

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Discussion Starter #11
if you like panasonic, then that should be fine. panasonic are 'good' btw, so no probs there.

though i personally prefer alpine and pioneer.

:)

It was just an example. I wanted to make sure that I found the correct adaptor type for my steering wheel controls.

I personally like pioneer but I have not found a steering wheel controls adaptor for pioneer.
 

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AO Silver Member, 155 Lounge Winner 09
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perhaps visit a good pioneer ICE specialist and discuss your needs. they can check catalogues and see what is available.

:)
 
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