using 4v to switch12v ign live

Home / the12volt's Install Bay / Relays / using 4v to switch12v ign live (

Topic Closed)

Welcome Guest :)

Members

Next Page > < Prev Topic Next Topic >

audiman28q

Member - Posts: 14

Joined: September 28, 2011

Location: United Kingdom

Posted: October 01, 2011 at 4:26 PM / IP Logged

Hi Guys need to pick your brains.

This is a bit complicated but ill keep it as short as poss.I have a 99 Audi A4 B5 2.8 Quattro that runs the stock Concert head unit no OE disc changer the unit has an interface connected to it that allows the use of an Alpine 6 disc changer accessed via the mode button on the head unit. also connected to this (all of these are on standard ISO connectors) is a Soundlinx MOD01 AUX interface that allows switching between a further two audio inputs connected to one of these via RCA is a Parrot MKi9200 Bluetooth car kit.The Soundlinx provides a push button channel selector & status LED-no LED-changer output,solid LED-car kit/phone output,flashing LED-spare channel output.The problem I have is that when the mode button is pressed and the car kit/phone output (solid LED)is selected the changer continues to run-it doesnt play-no music can be heard but it just plods on through all the discs in the changer until either the mode button is pressed or the ign switched off.What i need you guys help with is coming up with someway of using the Soundlinx power to kill the ign live to the changer when the carkit/phone is selected.The status LED supply is 4 volts and I was wondering if i could use this in someway relay/circuit to switch the changer power off.was thinking of using a relay but i belive their min voltage is 8 volt to trip the coil.any ideas,thoughts or whatever will be greatfully rec.

Yours-Audiman28q

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 01, 2011 at 5:35 PM / IP Logged

Or of course just obtain the radio pin outs and use the Parrot's low level outputs, speaker +, - and mute to input the radio directly.

If you speak to Armour Auto or Parrot's tech boys, there is a plug to fit into the back of the Audi head unit that will do it probably 06-088B

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 01, 2011 at 5:37 PM / IP Logged

Oh and throw away the Soundlinx interface.

audiman28q

Member - Posts: 14

Joined: September 28, 2011

Location: United Kingdom

Posted: October 01, 2011 at 6:25 PM / IP Logged

thanks for the reply-of course works well if your a pro which it sounds like you are however im not.I can see where youre coming from but cant see how this stops the problem of the changer continuing to run as surely you would still need to use the mode button to select the input from the parrot or am i missing something here.any chance of a little more clarification please-cheers.

i am an idiot

Platinum - Posts: 13,677

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: October 01, 2011 at 8:19 PM / IP Logged

A transistor and a 5volt relay. I will find a suitable drawing tomorrow.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 02, 2011 at 1:28 AM / IP Logged

No it's automatic! Not installed correctly.

Mute signal from the Parrot will switch the head unit inputs automatically. You might even be able to buy that kit from an Audi dealer (at what price?).

Don't go for a clever remedy, keep it simple and make those phone calls tomorrow.

If you look at the rear of the Audi head unit you will either have a row on top of the 2 x ISO plugs, or down the centre. Fully loaded that slot has green, yellow and blue plugs in it. The green is the one, yellow for amp and blue for factory CD changer.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 02, 2011 at 3:13 AM / IP Logged

This is the correct pin configuration, it will save you from having to push buttons on phone calls. Connecting the mute SHOULD pause the CD transport but I can't guarantee it, we have Grundig (now out of business) connecting to Alpine via a third party (PAC? although Mr. I knows better than me), none of the above parties will help you.

I can't because I have Alpine HU and changer, which DOES pause during phone calls + auto answer on my Parrot (in the settings menu), so nothing is touched!

Yes I'm a pro as is Mr.I, he more on the electronic side, me installation which surely is why you posted here in the first place.

Sorry for sounding patronising but KISS is the first rule:- concert.bmp

audiman28q

Member - Posts: 14

Joined: September 28, 2011

Location: United Kingdom

Posted: October 05, 2011 at 12:32 PM / IP Logged

Hi guys sorry for the delay replying to you both work commitments took over unexpectedly.thanks for your replies and your help can see where ur coming from Howie and agree simple is best just that im dealing with an install someone did prior to me getting the car so working with what ive got but ill certainly try it and let u know the outcome and Mr I i would appreciate seeing a diagram of the relay and transistor you mentioned-Thanks again guys.

i am an idiot

Platinum - Posts: 13,677

Joined: September 21, 2006

Location: Louisiana, United States

Posted: October 05, 2011 at 12:36 PM / IP Logged

Which voltage changes when the LED illuminates? Does it always have ground and the positive voltage comes in when it lights? Or does it always have +4 and the ground is how they get it to come on?

audiman28q

Member - Posts: 14

Joined: September 28, 2011

Location: United Kingdom

Posted: October 05, 2011 at 1:15 PM / IP Logged

Now theres an interesting question-I dont know-know what you mean tho-does the live switch or the +ve,ill have to have a play with the old multimeter and come back to you-cheers.

Next Page >

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.