Switched power output from Radio

davidm_uk · 3rd July 2015, 15:54

I've got an mp3 player that transmits to the radio via an RF channel. Works reasonably well except doesn't really fit well in the cig lighter socket, so I want to wire up an auxiliary socket. Rather than permanent power I wonder if the radio (Iovox CR80) has a switched power output (the radio switches off after 20 minutes if the ignition key is in the off position)?

I'm guessing it does have, as the supply to the boot mounted CD changer, but if someones got a circuit diagram that would be a help.

While on the subject, how do get the head unit out to access the wiring?

raykay · 3rd July 2015, 17:48

Quote:

Originally Posted by davidm_uk

I wonder if the radio (Iovox CR80) has a switched power output

The Purple/Yellow cable in pin 5 of the grey power ISO connector.

Jakg · 3rd July 2015, 17:59

DO NOT USE the switched power output for this.

If you mean the cars +12v radio connection - it's for signal only, if you actually take any load off it wierd things happen to the cars electrics.

If you mean the remote / amp power on the headunit, thats only for a signal - if you try to take any real load off it you'll burn out your headunit.

raykay · 3rd July 2015, 18:33

The Purple/Yellow is a 12v switched output, not a signal output (the 75/ZT use it to supply the aerial amplfier).

For a high power output it can be used to feed a relay coil.

davidm_uk · 4th July 2015, 15:12

Thanks. I'll check the power consumption of the mp3 player, but I'd be surprised if it's more than a couple of hundred mA.

davidm_uk · 21st July 2015, 10:08

Finally assembled all the bits, have mounted a cig lighter socket in the tray behind the the cover where the drivers side cup holder would go, and cut a hole in the cover to allow access ( I have a spare cover anyway).

I'm going to use the relay as suggested above, and will put a 1A fuse in the supply as well.

Probably easiest to take all the connections from the wires to the radio DIN plug so in addition to the purple/yellow for the switched supply to the relay can anyone tell me the wire colours for the +12v supply and ground please?

bubs · 21st July 2015, 12:00

You could just wire one up directly to the fuse box. The "Aux" fuse on an 03 (assuming it's the same as mine) would be a switched live and you'll have no need for relays. see this guide i did when putting my aux socket in the cubby box.
aux socket

raykay · 21st July 2015, 14:05

Quote:

Originally Posted by davidm_uk

Probably easiest to take all the connections from the wires to the radio DIN plug so in addition to the purple/yellow for the switched supply to the relay can anyone tell me the wire colours for the +12v supply and ground please?

Purple/Pink is 12v battery live feed, Light Green/White is 12v ignition feed, Black is Earth.

raykay · 21st July 2015, 14:16

Quote:

Originally Posted by davidm_uk

Probably easiest to take all the connections from the wires to the radio DIN plug so in addition to the purple/yellow for the switched supply to the relay can anyone tell me the wire colours for the +12v supply and ground please?

Purple/Pink is 12v battery feed,Light Green/White is 12v ignition feed, Black is Ground.

davidm_uk · 28th July 2015, 08:40

Well, all wired up and installed*.

Turns out Purple/Yellow is NOT a 12v switched output, it has about 9v on it all the time, which is enough to activate the relay.

I've left it like that for the moment, will just have to remember to unplug the mp3 player when not in use. I'll probably end up just wiring it to a switched ignition feed and ditch the relay.

*and of course one of the radio panel fixing screws disappeared inside the dashboard, probably never to be seen again (but just heard rattling)!

3rd July 2015, 15:54	#1
davidm_uk Regular poster R75 CDTi Saloon (53 reg) Join Date: Jul 2008 Location: St Albans, Hertfordshire Posts: 78 Thanks: 3 Thanked 2 Times in 2 Posts	Switched power output from Radio I've got an mp3 player that transmits to the radio via an RF channel. Works reasonably well except doesn't really fit well in the cig lighter socket, so I want to wire up an auxiliary socket. Rather than permanent power I wonder if the radio (Iovox CR80) has a switched power output (the radio switches off after 20 minutes if the ignition key is in the off position)? I'm guessing it does have, as the supply to the boot mounted CD changer, but if someones got a circuit diagram that would be a help. While on the subject, how do get the head unit out to access the wiring?

3rd July 2015, 18:33	#4
raykay I really should get out more....... Now Other Manufacturer Join Date: Nov 2006 Location: Co. Kerry Posts: 2,786 Thanks: 16 Thanked 310 Times in 283 Posts	The Purple/Yellow is a 12v switched output, not a signal output (the 75/ZT use it to supply the aerial amplfier). For a high power output it can be used to feed a relay coil. Last edited by raykay; 3rd July 2015 at 18:52..

3rd July 2015, 17:59	#3
Jakg This is my second home N/A Join Date: Feb 2010 Location: Suffolk Posts: 6,867 Thanks: 0 Thanked 397 Times in 302 Posts	DO NOT USE the switched power output for this. If you mean the cars +12v radio connection - it's for signal only, if you actually take any load off it wierd things happen to the cars electrics. If you mean the remote / amp power on the headunit, thats only for a signal - if you try to take any real load off it you'll burn out your headunit.

4th July 2015, 15:12	#5
davidm_uk Regular poster R75 CDTi Saloon (53 reg) Join Date: Jul 2008 Location: St Albans, Hertfordshire Posts: 78 Thanks: 3 Thanked 2 Times in 2 Posts	Thanks. I'll check the power consumption of the mp3 player, but I'd be surprised if it's more than a couple of hundred mA.

21st July 2015, 10:08	#6
davidm_uk Regular poster R75 CDTi Saloon (53 reg) Join Date: Jul 2008 Location: St Albans, Hertfordshire Posts: 78 Thanks: 3 Thanked 2 Times in 2 Posts	Finally assembled all the bits, have mounted a cig lighter socket in the tray behind the the cover where the drivers side cup holder would go, and cut a hole in the cover to allow access ( I have a spare cover anyway). I'm going to use the relay as suggested above, and will put a 1A fuse in the supply as well. Probably easiest to take all the connections from the wires to the radio DIN plug so in addition to the purple/yellow for the switched supply to the relay can anyone tell me the wire colours for the +12v supply and ground please?

21st July 2015, 12:00	#7
bubs Posted a thing or two ROVER 75 Join Date: Oct 2012 Location: Canvey Island, Essex Posts: 1,651 Thanks: 43 Thanked 163 Times in 134 Posts	You could just wire one up directly to the fuse box. The "Aux" fuse on an 03 (assuming it's the same as mine) would be a switched live and you'll have no need for relays. see this guide i did when putting my aux socket in the cubby box. aux socket

28th July 2015, 08:40	#10
davidm_uk Regular poster R75 CDTi Saloon (53 reg) Join Date: Jul 2008 Location: St Albans, Hertfordshire Posts: 78 Thanks: 3 Thanked 2 Times in 2 Posts	Well, all wired up and installed. Turns out Purple/Yellow is NOT* a 12v switched output, it has about 9v on it all the time, which is enough to activate the relay. I've left it like that for the moment, will just have to remember to unplug the mp3 player when not in use. I'll probably end up just wiring it to a switched ignition feed and ditch the relay. *and of course one of the radio panel fixing screws disappeared inside the dashboard, probably never to be seen again (but just heard rattling)!