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Aux input socket
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ofob69
 


Member Since: 06 Oct 2011
Location: Pangbourne
Posts: 61

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3
Aux input socket

Need a bit of help on this one.

I wanted to add an Aux input socket at the front of car for Spotify etc. (I have one on rear passenger console) so having read numerous articles, YouTube etc. I located connector block at rear of head unit and tee'ed into the red, blue and black wires, connected to Aux socket, which I located at bottom of centre trim......!

It works, but only just, very quiet even though I've played through a booster App on my Android phone. Any ideas? I am thinking my ground wire (the black one) is wrong but not sure what to do next?

The Disco is HSE with the Harman Kardon unit
  
Post #23552187th Dec 2023 1:51 pm
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18468

United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

Try it with a cable plugged into the rear socket (but nothing playing).
 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know! 
 
Post #23552197th Dec 2023 1:58 pm
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ofob69
 


Member Since: 06 Oct 2011
Location: Pangbourne
Posts: 61

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Well that's interesting, that works.......!

You are obviously better at electronics than I am, although I'm pretty handy on other stuff.

Is there anything I can do other than leaving a cable permanently in the rear socket.

Also I get a bit of interference using either socket, sounds like a faint galloping horse - any ideas?

Pete
  
Post #23552247th Dec 2023 2:23 pm
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Dr Jones
 


Member Since: 20 Feb 2012
Location: Pretoria
Posts: 55

South Africa 2005 Discovery 3 4.4 V8 HSE Auto Chawton WhiteDiscovery 3

I trimmed most of the odd bits off the headpone jack plug, leaving the Tip , Ring , Sleeve and about 2 mm, then just stick it in the aux input and close the cover.

Has been going for the last 10 years or so. Need to give it a turn every few months lately as it is oxidizing between the plug and socket, losing left channel input.
  
Post #23552297th Dec 2023 3:52 pm
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HairyFool
 


Member Since: 04 Jan 2023
Location: Essex
Posts: 550

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto ZanzibarDiscovery 4

It would indicate the socket has a switch built in to sense the socket is in use, not just the ground, left and right.
 A visitor from the dark side, my other vehicle is an MG5 EV  
Post #23552497th Dec 2023 7:04 pm
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Martin
Site Admin and Owner 


Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18468

United Kingdom 2006 Discovery 3 TDV6 SE Manual Buckingham BlueDiscovery 3

When nothing is plugged into the back, there’s a switch which grounds the left and right channel to get rid of noise.
 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know! 
 
Post #23552547th Dec 2023 7:20 pm
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KPTV8
 


Member Since: 05 Feb 2012
Location: Itinerant !! (Scotland/Donegal)
Posts: 142

Scotland 2010 Discovery 4 5.0 V8 HSE Auto Nara BronzeDiscovery 4

Maybe just plug a dummy jackplug into the rear socket (nothing connected to it), and see if the "piggyback" front jack socket then produces a full-strength signal ?
  
Post #23553488th Dec 2023 9:41 pm
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TheWojtek
 


Member Since: 23 Apr 2016
Location: Poznan, Poland
Posts: 82

Poland 2006 LR3 4.4 V8 SE Auto Chawton WhiteLR3

It will. Most, if not all, kits that add a hardwired external source to the AUX input (Carplay adapters, I am looking at you), include a dummy plug that needs to be put into the original AUX minijack socket to get the sound.
 Wojtek
L319: dad's
L320: mine 
 
Post #23553618th Dec 2023 11:13 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10387

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I just unplugged the rear socket from the back.

Bit of a faf as one screw in the fridge area. And it’s recommend this screw is not refitted
  
Post #23553669th Dec 2023 12:00 am
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TheWojtek
 


Member Since: 23 Apr 2016
Location: Poznan, Poland
Posts: 82

Poland 2006 LR3 4.4 V8 SE Auto Chawton WhiteLR3

Double-checked my system: cuts the sound off if the dummy plug is removed.
Since no conductivity is needed and it only acts as a switch, I 3D printed a plastic dummy with a flat surface (https://www.printables.com/model/123402-tr...dummy-plug) and used it instead of the plug I was provided with (this one looks like you cut it off a headphone cable).
Now it sits flush and completely invisible, the sound plays OK.
 Wojtek
L319: dad's
L320: mine 
 
Post #235579113th Dec 2023 10:42 am
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1211

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Might be a daft question, but are you using the rear aux plug? If not, the the wiring for it comes from the front anyway so may be as easy to pull the rear plug wiring back through the loom in the Center console and just reposition where you want it?
 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕 
 
Post #235579313th Dec 2023 11:34 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10387

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Wiring will be bundled with power socket and heated seat switches I think.

You could also unplug the loom in the front left footwell.
  
Post #235579413th Dec 2023 11:36 am
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loanrangie
 


Member Since: 18 Jun 2017
Location: Melbourne
Posts: 610

Australia 2008 Discovery 3 TDV6 SE Auto Stornoway GreyDiscovery 3

I'm sure i read on here years ago that is you connected both ground wires when tapping into the aux plug at the back of the head unit that it fixes the low volume issue.
Never got try it out since going to an android head unit which made the aux plug superfluous.
  
Post #235589914th Dec 2023 10:08 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10387

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Interested to hear what you mean by both ground wires
  
Post #235590014th Dec 2023 10:10 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13685

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Personally I bought a pre made radio loom that had the added aux socket already incorporated which was just plug and play, carefully installed the 3.5mm aux into the centre dashboard

Hope that may also help


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Last edited by gstuart on 14th Dec 2023 12:08 pm. Edited 1 time in total 
Post #235591714th Dec 2023 12:04 pm
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