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Well, finally I figured, after 2 years of using this forum to learn everything I needed to know about my car, it is my turn to give a little contribution to the community.
Even though this is very simple diy and I believe most of you guys don't really need to be told how to route piece of cable from the trunk to your center console, here it is, take it or leave it:

First off, let me skip disclaimer, you know the drill, I'm not responsible... yada, yada.

I decided to go with BLITZSAFE Aux adapter instead of DICE for three reasons. First, it was half price of the DICE, second I don't really use Ipod but rather listen to my music on my phone and third, I don't care or need song names displayed on the radio.
My radio is pre 09/03 so I had to go for the trunk install.

Here is the tools you need: flat head and phillips screwdriver, small torx screwdriver (dunno what size it doesn't say on it), small wire cutters, soldering iron and solder, some electrical tape (or heat shrink tubing if you prefer) and a piece of metal wire for fishing the aux cable.

Also you need: Blitzsafe Aux adapter ($75), 12ft audio Y cable ($10), RCA stereo cable ($5-10 if you want retractable) and 3.5mm stereo phone jack ($5 for 2 of them @ radio shack)
<a href="http://www.flickr.com/photos/[email protected]/4514624036/" title="DSC_2695 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4064/4514624036_8a09dd4769_b.jpg" width="1024" height="680" alt="DSC_2695" /></a>

Here we go:

Once you pop your trunk you might want to start by removing tail light assembly.
<a href="http://www.flickr.com/photos/[email protected]/4514624224/" title="DSC_2696 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2731/4514624224_162709510f_b.jpg" width="680" height="1024" alt="DSC_2696" /></a> <a href="http://www.flickr.com/photos/[email protected]/4513985795/" title="DSC_2697 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4046/4513985795_1968610060_b.jpg" width="680" height="1024" alt="DSC_2697" /></a>
I didn't and I started pulling the carpeting out which resulted in broken clip on my tail light assembly.
<a href="http://www.flickr.com/photos/[email protected]/4513985919/" title="DSC_2698 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2679/4513985919_88afc1eb52_b.jpg" width="1024" height="680" alt="DSC_2698" /></a><a href="http://www.flickr.com/photos/[email protected]/4513985967/" title="DSC_2699 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2360/4513985967_6c5c470622_b.jpg" width="1024" height="680" alt="DSC_2699" /></a>

Using flat head screwdriver, remove two rivets holding the carpeting and pull the carpeting out.
<a href="http://www.flickr.com/photos/[email protected]/4514624888/" title="DSC_2704 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4035/4514624888_cc9761a69d_b.jpg" width="680" height="1024" alt="DSC_2704" /></a>

Be careful not to break plastic clip in the corner. I couldn't figure out how to remove it but it wasn't necessary anyways.
<a href="http://www.flickr.com/photos/[email protected]/4514625240/" title="DSC_2707 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2305/4514625240_589b1f54c0_b.jpg" width="1024" height="680" alt="DSC_2707" /></a>

Locate cd changer harness and plug it in your blitzsafe adapter to make sure it works properly. Plug in your mp3 player and press mode or CD button on your head unit until it shows CD 1-99. You should be able to play music through your speakers at this point.
<a href="http://www.flickr.com/photos/[email protected]/4513986515/" title="DSC_2705 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2695/4513986515_978111272e_b.jpg" width="680" height="1024" alt="DSC_2705" /></a><a href="http://www.flickr.com/photos/[email protected]/4513986599/" title="DSC_2706 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2325/4513986599_d437720d56_b.jpg" width="680" height="1024" alt="DSC_2706" /></a>

Now it's time to do a little wire cutting and soldering. first I used ohm meter as continuity tester to find out where to solder wires on my phone jack. You need to use common sense to figure this out as I can't explain it in simple words. Feel free to add detailed explanation to this diy if you want to.
<a href="http://www.flickr.com/photos/[email protected]/4514625442/" title="DSC_2709 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2744/4514625442_1ec44ab180_b.jpg" width="1024" height="680" alt="DSC_2709" /></a>

Then I cut the cable
<a href="http://www.flickr.com/photos/[email protected]/4513987035/" title="DSC_2710 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2292/4513987035_5215aa425d_b.jpg" width="1024" height="680" alt="DSC_2710" /></a>

and determined where each wire has to be soldered on the phone jack.
<a href="http://www.flickr.com/photos/[email protected]/4514625616/" title="DSC_2711 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2720/4514625616_5bcf3a7aa6_b.jpg" width="680" height="1024" alt="DSC_2711" /></a>

solder it all together and wrap it with electrical tape or heat shrink tubing.
<a href="http://www.flickr.com/photos/[email protected]/4513987229/" title="DSC_2712 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2251/4513987229_26fb892d07_b.jpg" width="1024" height="680" alt="DSC_2712" /></a><a href="http://www.flickr.com/photos/[email protected]/4514625758/" title="DSC_2713 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2256/4514625758_260fd3eb94_b.jpg" width="1024" height="680" alt="DSC_2713" /></a>

Now remove the back seat by pulling it out. Sides can be slightly bent for easier removal.
<a href="http://www.flickr.com/photos/[email protected]/4513986855/" title="DSC_2708 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2685/4513986855_2c61b9fec1_b.jpg" width="680" height="1024" alt="DSC_2708" /></a>

Remove the corner of the back seat by pulling out at the bottom first. It is clipped in place and feels like it's gonna break if you pull to hard.
<a href="http://www.flickr.com/photos/[email protected]/4514625932/" title="DSC_2715 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4029/4514625932_db47c860c9_b.jpg" width="680" height="1024" alt="DSC_2715" /></a>

You don't want to route your cable through this hole because the seat clips in there! Notice where other wires go and use that route instead.
<a href="http://www.flickr.com/photos/[email protected]/4513987999/" title="DSC_2716 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2479/4513987999_7f399e2642_b.jpg" width="680" height="1024" alt="DSC_2716" /></a>

Plug Cd changer harness and y cable into your blitzsafe adapter, bundle it together with some zip ties and you can also zip tie adapter itself on the chassis. Route the cable to the cabin.
<a href="http://www.flickr.com/photos/[email protected]/4513988187/" title="DSC_2717 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4022/4513988187_043f8fbf97_b.jpg" width="1024" height="680" alt="DSC_2717" /></a><a href="http://www.flickr.com/photos/[email protected]/4514626638/" title="DSC_2718 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2332/4514626638_a2dee6a46c_b.jpg" width="1024" height="680" alt="DSC_2718" /></a><a href="http://www.flickr.com/photos/[email protected]/4514626756/" title="DSC_2719 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4050/4514626756_5f54a6f15d_b.jpg" width="1024" height="680" alt="DSC_2719" /></a>

Now it's time to start taking apart center console. Let's start with the rear ashtray. Simply pull it out, disconnect the harness and remove two phillips screws. My center console was FILTHY as you can see, so I cleaned everything up upon assembly.
<a href="http://www.flickr.com/photos/[email protected]/4513988447/" title="DSC_2720 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2073/4513988447_3e0f4f17d0_b.jpg" width="680" height="1024" alt="DSC_2720" /></a><a href="http://www.flickr.com/photos/[email protected]/4513988521/" title="DSC_2721 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2734/4513988521_d455c0ec88_b.jpg" width="1024" height="680" alt="DSC_2721" /></a>

Remove the shifter boot by pressing from both sides and lifting it up. Unscrew two phillips screws and remove the trim. Under the trim you will find another two screws. remove them as well
<a href="http://www.flickr.com/photos/[email protected]/4513988605/" title="DSC_2722 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4050/4513988605_1f6fa88d4d_b.jpg" width="680" height="1024" alt="DSC_2722" /></a><a href="http://www.flickr.com/photos/[email protected]/4513988789/" title="DSC_2724 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2516/4513988789_3b5fb3c0e6_b.jpg" width="1024" height="680" alt="DSC_2724" /></a>

Remove the e-brake boot in the same fashion as shifter boot and remove plastic trim that holds rear ashtray in place. This trim has sharp edges so be careful not to scratch your armrest or your seats.
<a href="http://www.flickr.com/photos/[email protected]/4513988869/" title="DSC_2725 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4037/4513988869_5159eed5db_b.jpg" width="680" height="1024" alt="DSC_2725" /></a><a href="http://www.flickr.com/photos/[email protected]/4514627466/" title="DSC_2726 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4041/4514627466_b54d7676d6_b.jpg" width="680" height="1024" alt="DSC_2726" /></a>

Removing center console will require some fiddling and playing with armrest so take your time on this one.
<a href="http://www.flickr.com/photos/[email protected]/4513989083/" title="DSC_2727 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4054/4513989083_643cbf1fa9_b.jpg" width="1024" height="680" alt="DSC_2727" /></a>

Remove sunglass tray by applying pressure upwards and pulling it out.
<a href="http://www.flickr.com/photos/[email protected]/4513989237/" title="DSC_2728 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4022/4513989237_a472fabc6c_b.jpg" width="680" height="1024" alt="DSC_2728" /></a>

Remove two phillips screws and pull entire assembly out. disconnect the harness and cigarette lighter.
<a href="http://www.flickr.com/photos/[email protected]/4514627896/" title="DSC_2730 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4021/4514627896_c2f8eaf65f_b.jpg" width="1024" height="680" alt="DSC_2730" /></a><a href="http://www.flickr.com/photos/[email protected]/4514628020/" title="DSC_2731 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2736/4514628020_64c6dd26fe_b.jpg" width="1024" height="680" alt="DSC_2731" /></a>

Now that we had done all this hard work, it's time to take a little break. So why not go fishing? Cable fishing that is.
I fount it to be easiest if you stick a piece of aluminum wire under the carpet, starting near e-brake and pulling it out on the other side, then hooking up your soldered cable and carefully pulling the aluminum wire back.
<a href="http://www.flickr.com/photos/[email protected]/4514628100/" title="DSC_2732 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2038/4514628100_fcc7a526de_b.jpg" width="1024" height="680" alt="DSC_2732" /></a><a href="http://www.flickr.com/photos/[email protected]/4513989653/" title="DSC_2733 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2368/4513989653_cd7427aeec_b.jpg" width="1024" height="680" alt="DSC_2733" /></a>

Now simply route the cable to the front. 12ft was perfect length for this job.
<a href="http://www.flickr.com/photos/[email protected]/4513989759/" title="DSC_2734 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4019/4513989759_06808d077a_b.jpg" width="680" height="1024" alt="DSC_2734" /></a><a href="http://www.flickr.com/photos/[email protected]/4514628470/" title="DSC_2735 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2377/4514628470_a85a2eac93_b.jpg" width="680" height="1024" alt="DSC_2735" /></a>

I was so excited at this point that I forgot to take pictures of a few steps in a process. However, it's very straight forward and you shouldn't have any problems figuring this out.
Remove button assembly by unscrewing two torx screws and remove front and rear panel using a flat head screwdriver.
<a href="http://www.flickr.com/photos/[email protected]/4514628538/" title="DSC_2736 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2089/4514628538_7f59b65047_b.jpg" width="1024" height="680" alt="DSC_2736" /></a>

Cut the hole on the back panel and stick phone jack through it. I made this ugly cut because I was using dremmel and wire cutters, but it doesn't bother me as it will be hidden behind the dash anyway.
Now the part that is not pictured, carefully position and drill the hole in the front panel for the phone jack. Stick the threaded part of the jack through and secure it with provided nut.
<a href="http://www.flickr.com/photos/[email protected]/4514628600/" title="DSC_2737 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2361/4514628600_2fd3bd7277_b.jpg" width="1024" height="680" alt="DSC_2737" /></a><a href="http://www.flickr.com/photos/[email protected]/4514628700/" title="DSC_2738 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4039/4514628700_f131c59e4b_b.jpg" width="1024" height="680" alt="DSC_2738" /></a>

At this point it's probably a good idea to test if everything works properly.
<a href="http://www.flickr.com/photos/[email protected]/4514628820/" title="DSC_2739 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2073/4514628820_f486b80370_b.jpg" width="680" height="1024" alt="DSC_2739" /></a>

Reassemble everything in reverse order and you're all done!

here is a few photos of finished install:
<a href="http://www.flickr.com/photos/[email protected]/4513990293/" title="DSC_2740 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2037/4513990293_842c6877e9_b.jpg" width="680" height="1024" alt="DSC_2740" /></a><a

I'm very happy with my new setup. Sound quality is great and I don't have any cables hanging around.

Let me know what you think :hi:
 

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few more pix, I didn't know there was a limit of 40 pix

<a href="http://www.flickr.com/photos/[email protected]/4514629098/" title="DSC_2742 by voodoosin, on Flickr"><img src="http://farm3.static.flickr.com/2308/4514629098_f3d831037e_b.jpg" width="1024" height="680" alt="DSC_2742" /></a><a href="http://www.flickr.com/photos/[email protected]/4513990619/" title="DSC_2743 by voodoosin, on Flickr"><img src="http://farm5.static.flickr.com/4020/4513990619_beb67f155c_b.jpg" width="1024" height="680" alt="DSC_2743" /></a>
 

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Cool DIY. Good pics too.

I did something similar but you could have saved some time and work on a few of your cable running steps that were unnecessary.

Nice work though!
 

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Great DIY! I'm about to start this project. I am planning to use some premium audio cable with a 12mm x 6mm thick cable body. Given the size of the jack that was routed and fished, I don't anticipate this will be a problem.

I did something similar but you could have saved some time and work on a few of your cable running steps that were unnecessary.
ZZen330, can you comment on which steps are not necessary? Thanks.
 

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Job done... thanks again.

I'm really happy with the results of following this DIY. I used two RG-59/U cables and they fit along the same cable route. Thanks again, thatsonlyme.
 

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Heeeeeeelp!

I bought my Blitzsafe adapter and opened up my trunk...Then I unfolded the bundle of cables and there was no 6 pin plug?! Only a 3 pin, two like... 8-12 pin. And a thick single pin plug. I am very confused... I drive a BMW 325i 2002. I emailed Blitzsafe and they said that the adapter I bought was the correct one...? I'm very confused.
 
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