Becker head unit to Boxster wiring help required

[nik]

Dear all,

Following on from my previous battery drain thread, I have done some further investigation, to recap:

1. My battery would drain over a period of 2 days, I did a drain test and the stereo (Becker Traffic Pro is the problem, it was drawing 450 miliamps.

2. I assumed that the head unit was at fault, but my research today as shown that maybe it isn't.

3. I went to my local audio store and tried out a Blaupunkt sat nav system in the car, and got exactly the same result it was drawing 450 miliamps, the guy at the audio store seemed to think that maybe the amp is permanently switched on as it would draw about 450 miliamps.

4. what I would like to do is to rewire the whole unit from scratch and see if the problem is caused by a bad connection or maybe incorrect wiring to start with.

I am particulary interested in the ones that don't attach to the small yellow amp plug, these are detailed below.

1. A thick red/black wire - I'm pretty sure this is pernanent live.

2. A thick brown wire - I'm pretty sure this is earth/ground

3. A thin orange wire - I'm pretty sure this is switched live

4. A thin white wire

5. A thin gray/pink wire

6. A thin light blue/white wire

Can anyone please supply me with definitive details on what each wire is for.

Ideally, if anyone has a Becker Traffic Pro fitted, could they pop it out and see how they are connected.

I already know that the thin black/red in the small yellow amp plug wire needs splicing into one of the others or there is no sound ( again if someone could confirm this it would put my mind at rest.)

As usual guys , thanks for your help, this is an invaluable forum, especially for those who like myself can't really afford Main Dealer repair costs.

Regards

nik

[nik]

Sorry all, please ignore my wiring qquestion for the head unit, I found a similar thread that eventually told me what to do, HOWEVER, just rewired as per the instructions and as soon as I plug the head unit in (not switched on) the draw on the abttery goes crazy, I'm now thinking that the previous owner who had an aftermarket Sony system installed may have done something different when wiring it to the amp, so my follow up is can someone send me a pic of how their amp is wired up, ideally so it shows the munber and colour of wires and were they fit into the amp.

thanks

nik

[Chris_in_NH]

Sorry all, please ignore my wiring qquestion for the head unit, I found a similar thread that eventually told me what to do, HOWEVER, just rewired as per the instructions and as soon as I plug the head unit in (not switched on) the draw on the abttery goes crazy, I'm now thinking that the previous owner who had an aftermarket Sony system installed may have done something different when wiring it to the amp, so my follow up is can someone send me a pic of how their amp is wired up, ideally so it shows the munber and colour of wires and were they fit into the amp.

thanks

nik

is your amp a factory amp? which one is it, the 4-channel or 6-channel? what stereo option do you have, M490 or M680?

that wire that you mentioned in the yellow plug (C1 plug i think) is probably the remote amp turn on wire. when you turn on the stereo, it sends a signal to the amp to turn on. maybe the previous owner's Sony system didn't have a remote amp turn-on feature, so the amp is on all the time. he of course would have the same battery drain you're experiencing. just thinking out loud here... is there any way to get in touch with the previous owner?

the Traffic Pro manual will have a diagram that shows the pinouts of the connectors. it may not tell the colors of the wires, but it will tell you which wire is in which connector/pin number. the C1 plug (if it's at all like the CDR-220's wiring) is where all the pre-amp speaker wires, the SHARED ground wire for the speakers, and the remote amp turn on wire are.

as far as i know, you should not need to splice any wire into another wire. it could be the shared ground wire, which would explain why you have no sound when it's not connected, or it could be the remote amp turn-on wire, which would also give you no sound.

[nik]

Sorry all, please ignore my wiring qquestion for the head unit, I found a similar thread that eventually told me what to do, HOWEVER, just rewired as per the instructions and as soon as I plug the head unit in (not switched on) the draw on the abttery goes crazy, I'm now thinking that the previous owner who had an aftermarket Sony system installed may have done something different when wiring it to the amp, so my follow up is can someone send me a pic of how their amp is wired up, ideally so it shows the munber and colour of wires and were they fit into the amp.

thanks

nik

is your amp a factory amp? which one is it, the 4-channel or 6-channel? what stereo option do you have, M490 or M680?

that wire that you mentioned in the yellow plug (C1 plug i think) is probably the remote amp turn on wire. when you turn on the stereo, it sends a signal to the amp to turn on. maybe the previous owner's Sony system didn't have a remote amp turn-on feature, so the amp is on all the time. he of course would have the same battery drain you're experiencing. just thinking out loud here... is there any way to get in touch with the previous owner?

the Traffic Pro manual will have a diagram that shows the pinouts of the connectors. it may not tell the colors of the wires, but it will tell you which wire is in which connector/pin number. the C1 plug (if it's at all like the CDR-220's wiring) is where all the pre-amp speaker wires, the SHARED ground wire for the speakers, and the remote amp turn on wire are.

as far as i know, you should not need to splice any wire into another wire. it could be the shared ground wire, which would explain why you have no sound when it's not connected, or it could be the remote amp turn-on wire, which would also give you no sound.

Chris,

thanks for your reply, having reviewed it I dont think I explained my problem that well, so here goes with a second try

I have a Becker Traffic Pro Hi-speed head unit that runs through the factory amp, I'm not sure which amp it is but I don't think that matters at the moment.

OK here goes, The unit works fine and I have full functionality and sound.

Negative lead on battery disconnected and a multimeter connected, ignition switch in position 1 to stop the alarm going off and headunit disconnected from the wiring harness = a draw of 1.72 on the 10amp scale which i believe equals 1720 miliamps.

Same set up as above paragraph but with the wiring harness connected to the head unit and the draw goes up to 2.4 which I think means that when the head unit is connected (still switched off) it is drawing about 600 miliamps which is the reason my battery keeps draining.

Same set up as above but with a loaned brand new Blaupunkt unit connected instaed of the Becker unit and the draw again goes up by 600 miliamps.

I think what I need is for someone who has a Becker Traffic Pro fitted to copy what I have done and let me know the draw from their car, alternatively if someone has a stock Porsche CDR system fitted if they could do the same and let me know what is being drawn.

I think that as soon as i connect the head unit, it powers up the memory function of the unit which results in the 600 miliamp draw

Another option is that I rewire the live, switched live and negative into the spare lead used for the phone, not sure if this will make any difference.

Any help or advice is gratefully received.

Thanks

Nik