360 Stereo Wiring

Does anyone happen to know if these 4 sets of cut wires (green, purple, gray, brown) are factory? My new to me 360's radio has never worked. I pulled it out and not sure if this was after market wiring not needed or if they chopped the original wires and put in their own afterwards. I pulled an ugly amp out of the front bonnet and a lot of obviously aftermarket wires going to it. It now has a Kenwood Excelon stereo in it. Thanks so much in advance as I don't know a lot about wiring a stereo.
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The cut cables look as if they are part of the original loom and (looking at the 355 wiring which is all I have to hand) were the speaker pairs

 

It looks like your car is a later model. The audio wiring on these would have gone to an OEM amplifier (rather than directly to the speakers)

Here is old vs new:

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The top right plug is the wiring going from the radio to the amplifier on your car. "42D" is the amplifier.

Italian colour code chart:

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On the newer cars, the radio has 4 channels (4 wire pairs) instead of 2. On the old car, a single channel wire pair was split and sent to two speakers (on each side of the car).

 

Does it come with an amplifier?

 

Just have a look at the ISO 10487 connector A & B specifications. If your Kenwood radio follows the specifications this would make your repair easier.

 

I'm not sure what the light blue and blue wires in that harness are. They don't seem to match the colours in the wiring diagrams. Light blue is generally live battery power (fused) on the 360. The darker blue could be anything. I don't think it's switched power on the 360. Usually yellow is switched power (or, it seems, orange/black with respect to the radio).

 

On the Iso specifications the dark blue is pre-amp/aerial and matches the 5th pin of your connector diagram, which should be red according to the Ferrari documentation... I have no knowledge of the 360, but chances are that it uses some sort of small factor antenna, whose signal that has to be amplified.

The light blue could be the dimmer. It is not mentioned in your diagram (6th pin is empty), but I would be surprised the system does not take into account night & day for the display. Quite easy to check : when the lights are on, this wire should supply12v.

 

Thanks. That makes sense (apart from the blue colour). Here's a diagram of one of the connectors on the amp. Most are audio wires from the head unit.

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It looks like the antenna preamp feeds a signal to the head unit and the amplifier (?).

Looks like there is an amplifier, although I'm not sure what powers it. Or is that red wire power? But what is powering what?

@Jerrari

Did your car come with an OEM stereo manual? It's not clear which wires are which channels.

 

Old car radio had an output for the electric antenna: when the radio was turned on it would ask to raise the antenna . The amplifier manufacturer were using this output as a workaround to activate the amp. This was to avoid having the amp running as soon as the contact was on (not a good idea to charge the amp condensers while the engine is cranking).

So this cable is still called antenna wire, when in effect it is now used to activate whatever ancillary the head unit needs. In your diagram you can see that it activates both the audio amplifier and the antenna pre-amp (as said these small antenna do have very little gain, so a small electrical pre-amp has to amplify the signal). In your diagram that's R-3D (from the head unit) that feeds R-12C & the bottom right pin of the above plug (i.e amplifier activation).

I doubt the OP had an external amplifier in his car: all the speakers wires are in the dashboard, whereas on an external amplifier setup, we would expect theses cables to be were the amplifier sits. These 4 twisted pairs do definitively look like speaker wires (twisted in order to reduce EMF). That's unless of course Ferrari decided to cut corners and used a "booster" instead of an amplifier properly connected through low level line input...

 

Thanks. That's starting to make more sense now. It just seems odd that the amp seems to be providing the head unit with two sources of power under certain circumstances. I guess that's acting as a "switched power source".

The OEM amplifier connector (42D) seems to be below the dash...

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... so the cables are in the right position.

Another connector on the amp (43D) goes to the left and right door speakers.
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How many speakers in this car?

If the car has 4 speakers, I would assume the 43D is actually a "regular" left / right output from a factory radio (that does not always come with low level line out required by an amplifier). This signal would then be "boosted" (i.e amplified with less gain than what would be done by a regular amplifier) and send back to the 4 speakers using 42D.

That would be a crude way to get more wattage out of an existing audio setup.

 

Fantastic information guys, thank you so much for taking the time to help me out like you have! I'll let you know how it goes.

 

The twisted pair wires will be to the speakers or AMP. should be one with solid color and one the same color with black stripe for each speaker.

 

Normally there are two speakers in each door (tweeter/woofer).

@Jerrari Do you have speakers between/behind the seats?

 

Looks like Aldous may have a few answers. OEM amp and additional speaker box shown here

https://aldousvoice.com/2015/03/21/ferrari-360-f430-hi-fi-sound-system/

The amp does have a 3rd connector, but all the wiring goes to the CD stacker in the frunk.

 

This could be the 20-pin 3rd amplifier plug here:

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EDIT: Or it could be the 26 pin plug on Aldous' website. The pinout is copyrighted, so I won't repost here.

 

Blue/Green are the standard Becker connections - sometimes there's a third which I think can be used for the cd and/or ipod - I believe its 41D in that diagram - my recollection is that there is a map of these pins in some Becker manuals and is probably in one of the older stereo threads here - the two identical white 8 socket plugs are then speakers (which OP has found cut off) and power/controls

 

Thanks for the link @Qavion , this makes it clear. So the 4 chopped wires are fed by a regular car radio with 4 channels (front left & right, rear left and right), these cables are routed to a booster that performs four things:

1) it merges the signal of rear (left and rear right) into a "mono" signal.
2) it boosts this mono signal so as to feed the subwoofer
3) it "clips" the front signals so as to make them compatible with the cheap front speakers (not burst them)
3) it boosts these signals prior to send them to the front doors via the 4 pin connector.

The front doors do have two speakers each (main and twitter), but they are connected in parrallel, so act as a single speakers (apart from the clipping mentioned, there must be some sort of high pass filter on the twitters in order not to burst them with low frequencies)

If there is no subwoofer in the back, given the simplicity of the front door audio, best approach is to forget about the ampligier and directly feed the front speakers (the 4pin connector) with a regular car radio. In order to make it easier to the next owner, a proper ISO harness would be a plus (for the sake of originality, a Becker connector would be best, but you would then have to use a becker radio).

 

Here's a rough online guide to the Becker pins, but it says it may vary from manufacturer to manufacturer

https://pinoutguide.com/CarAudio/car_audio_iso_pinout.shtml

@Jerrari What paperwork came with the your new Kenwood? And what model is it?

 

I had to figure all this out when I got my car and it was filled with ghetto stereo equipment

 

Hello all- I just purchased a 2003 360’Modena- the Becker radio is horrible so I’m replacing it with a single-DIN Carplay radio. I’m also going to install a small 4-channel Blaupunkt amp- probably behind the passenger seat. I’ll keep the stock door speakers for now.

My question is, I have the base hi-fi stereo system, not the optional one with the extra speakers. So this is just a two channel stereo correct?

The separate tweeter and woofer in each door are simply one channel wired in parallel correct? I saw that mentioned earlier in this thread.

Just looking for confirmation that the base stereo in a 2003 360 is 2-channel stereo, not 4.

Just want to confirm before I start wiring everything up.

thanks,
Greg

 

The Becker seems to have the facility for 4 channels. On the back of the radio head there is an 8 pin plug (middle one), but on the non-amp type setup only 4 pins are used. i.e. two wires for each door . See post #3 of this thread. Since all the speakers are in the doors on the non-amp type, (as you suspect) there are splices in each door to allow the wiring to feed the two speakers.

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The link I provided earlier shows the pinout for all the plugs on the back of the Becker:

https://pinoutguide.com/CarAudio/car_audio_iso_pinout.shtml

Basically the 4 wires/pins used on the non-amp car are the L/R "front speakers".