I decided to go a bit DIY for fitting my iPod in my 2005MY RRS.
More specifically, I use and iPhone with TomTom for navigation, so really wanted two iPod connections in the car. One by the windshield for navigation and when I wasn't using that, one in the glove box for music from my iPod Classic.

So, I bought two of these from Amazon, the same is available from Apple but in white, these were black and fitted better with the interior.
http://www.amazon.co.uk/gp/product/B004SBB...01_s01_i00


I also got a griffin twin usb charger
http://www.amazon.co.uk/gp/product/B0042B8...01_s00_i00


And a small DPDT switch from Maplins, along with a 3.5mm stereo jack and a 4xphono planel (2 left + 2 right phono sockets)

The 3.5mm jack is needed so create the ground connection to the AUX input. For some reason (probably to avoid interference), the car's ground and the aux ground are not the same. Plugging the 3.5mm jack into the AUX input makes the ground connection. Without it, you'll have no sound. So I've cut all the soldering tabs off mine, reduced the size of the plastic cover and leave it permanently plugged into the AUX jack.

A colleague of mine who lives in the US also got me an iJet remote control (http://www.buyijet.com/) which enables me to leave the classic in the glove box and remotely pause/play and skip next/previous. If you decide to go this route, make sure you get one with a dock connector that supports full passthrough so you get the audio out of the dock connector, and power from the iPod lead into the iPod itself.

A quick word of warning, much of the RRS's dash is clipped together and sometimes, when pulling a piece of trim off, clips that should come with whatever trim you're releasing prefer to drop behind the dash or somewhere equally annoying to get to. A magnetic pick up wand is useful, but there's a chance you won't recover all the clips, so a few spare might be a good idea if you want to keep your dash rattle free.

Start with a complete dashboard

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I doff my cap to you Sir Froggy,

I think it's fair to say I don't have the 'technical skills' to take the dashboard apart, let alone incorporate something like this, even if I wanted to.  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

I've looked up the part number for the clips that tend to go wayward: FYC500040, CLIP, STEEL.

There's a different clips (x4) under the terrain response piece of trim, but I can't find that anywhere, it's more like a folded flat spring type of clip. 

"Roads ? Where we're going there are no roads." Back to the future.

Is the volume still lower on the aux setting connecting this way,or has it rectified that?
Steve

Should be exactly the same, I've just tapped into the wires closer to the head unit, there are no electronics between the AUX jack and the head unit, just wiring so no reason for it to be any different. 

"Roads ? Where we're going there are no roads." Back to the future.

So have you not noticed a difference in volume when you switch between Aux and radio or cd?

mrfixit wrote:

So have you not noticed a difference in volume when you switch between Aux and radio or cd?

I haven't used the radio or CD since so can't answer I am afraid, but nothing I did would have improved or made it any worse. 

"Roads ? Where we're going there are no roads." Back to the future.

The aux input volume is lower on mine,and others have mentioned this as well.

mrfixit wrote:

The aux input volume is lower on mine,and others have mentioned this as well.

Tried it this morning and aux is lower than the radio on mine too. I guess it's because people could plug all manner of things in the jack, particularly output from the headphones of their mp3 player which is higher level (more volts) than an AUX output from the iPod's dock connector or other "proper" auxiliary output. This in turn could lead to distortion when fed headphone outputs if they had set the input to "official" aux levels. Hope this makes sense.

Took a few more pictures this morning

iPod classic in glovebox

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iJet remote receiver in dock connector

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iJet Remote

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iPhone on windscreen mount

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"dummy" jack in aux socket behind armrest

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"Roads ? Where we're going there are no roads." Back to the future.

Cheers,didn't think it would have sorted the volume issue.This was my iPod/iPhone solution.
http://www.rrsport.co.uk/forum/topic20919.html?highlight=

Very sweet might have to consider an upgrade, although I like the sat nav in front of me, rather than the side. 

"Roads ? Where we're going there are no roads." Back to the future.

Ive not looked - certainly on older models - but cant you set a range of those preset volumes, like the mobile phone level etc.

Its not a normal menu on pre 12MY you have to go an odd way to find it i cant recall - does it have an aux level in there? i dont know, but worth a look Mike

2014 Facelift Discovery

Google doesn't come up with any tricks for changing the AUX volume. Someone on a different forum suggested turning Logic 7 off, but that made zero difference to mine. 

"Roads ? Where we're going there are no roads." Back to the future.

mrfrog wrote:

Google doesn't come up with any tricks for changing the AUX volume. Someone on a different forum suggested turning Logic 7 off, but that made zero difference to mine.

here you go...a proper search here and got it...im not saying its going to work for you: (BTW - look at the bottom for pre 2009 cars)

Quote:

Try looking at Page 283 of the Owners Handbook.

If you hold down the "tone" button (muical note) on the dash, the volume menu comes up allowing you to set Nav, Phone etc volumes individually.

Quote:

Audio level settings VOLUME ADJUSTMENT
Sustained exposure to high sound levels can
damage your hearing.
To access the volume set up menu,
press and hold the Tone hard key
until the volume set up menu is displayed. The
soft keys to the left, allow you to choose a
setting to adjust (AVC, INFO, NAV, PHONE and
VOICE). The boxes to the right of the soft keys
show the values currently set for each option.
The bar graph and the +/– soft keys are used to
change the settings and show the changes.
Note: If no change is made within ten seconds,
the volume set up menu will disappear.
Automatic Volume Control (AVC)
Automatic Volume Control adjusts the volume
level as the vehicle speed increases. This
compensates for the increase in noise at
increased speeds.
From the volume set up menu, touch the AVC
soft key to display the settings for AVC.
The bar graph represents the amount by which
the volume level may increase. If the smallest
bar is selected, the AVC function will be turned
off. In this state the volume will not increase
with vehicle speed. The remaining bars (from 1
to 9) will increase the volume level up to the
maximum level selected.
To increase the level of volume change, press
the + soft key. Each press will select the next
bar to the right, up to the maximum (9).
To decrease the level of volume change, press
the – soft key. Each press will select the next
bar to the left, down to the minimum (1). A
subsequent press of the – soft key will switch
AVC off.
Information announcements
Press the INFO soft key from the volume set up
menu, to adjust the volume level for radio
announcements, such as news broadcasts and
traffic announcements on RDS.
To increase the volume level, press the + soft
key. Each press will select the next bar to the
right, up to the maximum (9).
To decrease the volume level, press the – soft
key. Each press will select the next bar to the
left, down to the minimum (1).
Navigation guidance
Press the NAV soft key from the volume set up
menu, to adjust the volume level for navigation
guidance messages.
To increase the volume level, press the + soft
key. Each press will select the next bar to the
right, up to the maximum (9).
To decrease the volume level, press the – soft
key. Each press will select the next bar to the
left, down to the minimum (1).
Telephone volume
Press the PHONE soft key from the volume set
up menu, to adjust the volume level for the
telephone.
To increase the volume level, press the + soft
key. Each press will select the next bar to the
right, up to the maximum (25).
To decrease the volume level, press the – soft
key. Each press will select the next bar to the
left, down to the minimum (5).

According to the Topix manual for a 2009 model car - Pages 276-278 there is the same facility with "pre-facelift" cars but it's accessed slightly differently.