How to restore the wiring for your radio (with lots of pics)

In Car Entertainment - NO SELLING OF I.C.E. PLEASE

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tristan325
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Post Wed Mar 14, 2007 10:19 pm

OK So I bought myself a Tech-1 sport, just like one I had many moons ago. And as I suspected the wiring behind the dash had been well and truly butchered by several, rather poor, stereo installations.

Obviously being the fussy purist that I am, this just would not do. So I set about rectifying the situation. I figured I would do a write-up detailing how easy it is so that others may benefit from my efforts.

The first thing I did was some research with BMW. I discovered that there is an accessory panel in the glove-box with a power outlet for a radio. OK I thought now to start looking for an ISO terminated lead. After around oh lets say 2 hours of mindless Internet searching (no porn honest guv) I found that Blaupunkt sell them on their website. Here's a link:-

http://www.bluespot.co.uk/install/show_model.asp?id=23

The one you need for the E30 is Part reference: PC2-25-4 and its £9.99 Bargain!

OK, to do this properly you are going to need the following things.

One of the above leads.

Male and female bullet connectors, or spades it dosen't actually matter as long as they are insulated.

A crimping tool (available at halfords and relatively cheap).

Screwdrivers.

A basic understanding of wiring.

Patience, fags and beer is always good.

So here is the first picture showing the abortion of wiring kindly left for me by previous owners!
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First thing to do is remove your stereo (if fitted).

Then open the glove-box and release the two support straps. These are held in by two plastic pegs that just push out. You can do this with your fingers.

Then if you look to the left and up you will see a white box with some wires going in to it. Depending on how your car was sent out from the dealers it may have a plug already located for the radio. If so pull it out and junk it.

Now take the new loom that looks like this
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And feed it through the stereo aperture and send it off to the left towards the accessory board. Remove the plastic trim at the top of the glove-box for better access. When you get there plug it in in to the board. You can't get it wrong because it only goes in one slot!

This is the accessory board with the loom installed.
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Now you need to remove all the dodgy wiring (if any). Mine was relatively easy as it was wired in to the hazard switch.

It should then look like this with just speaker wires and the aerial.
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You then need to do a bit of modifying of your new loom. For some reason on mine the orange and yellow wires needed reversing. Just cut the wires and connect yellow to orange and vise versa.

Then cut the thin black plastic plug off and connect bullets to each wire. Connect the opposite bullets to your speaker cables and connect them up. Pay attention to front/rear left/right etc and positive and negative.

Bullets on the speaker wires.
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Then pull everything through so it all looks neat and tidy like this.
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That's it! Easy or what!! If you check the clock you'll see that this whole job took me an hour and ten minutes. Mind you I did have two tea and fag breaks!

Heres the stereo all plumbed in neat and tidy!
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ian332isport
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Post Sun Mar 18, 2007 7:50 am

Hi Tristan,

Thanks for taking the time to write this up 8)

That Blaupunkt wiring harness is a nice find as well.

Ian.
If it aint broke - Modify it...
d6dph
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Post Sun Mar 18, 2007 8:27 am

Top work, Really nice write up. Got to be one for the articles section hey mods?
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tristan325
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Post Sun Mar 18, 2007 3:33 pm

Cheers guys!
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lukescott
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Post Sun Mar 18, 2007 7:57 pm

Great thread & find Tristan. I have been looking for a replacement for my radio which would allow me to play cd's and an ipod. I did not want it to look like a chav radio with moving pictures and flashing lights, so I'm thinking of this one... http://www.bluespot.co.uk/stock/kingston.asp anyone got any comments ??
tristan325
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Post Sun Mar 18, 2007 8:13 pm

Yeah that doesn't lok too bad. Other brands to consider would be Becker and if you can find and afford one Nakamichi are the dogs! Really understated appearance and awesome sound quality. A real audiophile unit.
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tari
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Post Thu Mar 22, 2007 12:12 am

i would go for a pioneer....

if you know how to use them you can make them sound prestine...
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placey
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Post Sun Apr 01, 2007 9:00 am

nice write up.

may i add a suggestion? when using bullet connectors always have the insulated (female) connectors on the car side - thus almost eliminating the risk of shorts against any part of the chassis. not so important for earth and speaker connections granted - but it's still a good habit to get into.

hope this helps

paul
i saw a doctor and she gave me some pills....
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DaveD
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Post Sun Apr 01, 2007 9:44 am

lukescott wrote:Great thread & find Tristan. I have been looking for a replacement for my radio which would allow me to play cd's and an ipod. I did not want it to look like a chav radio with moving pictures and flashing lights, so I'm thinking of this one... http://www.bluespot.co.uk/stock/kingston.asp anyone got any comments ??
Nice article ...is it possible to put a connection in to the lighting system (mine hasn't at the moment)
i have
http://www.pixmania.co.uk/uk/uk/234340/ ... radio.html
and have been pleased with it after a years use
tristan325
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Post Mon Apr 02, 2007 5:06 pm

DaveD wrote:
lukescott wrote:Great thread & find Tristan. I have been looking for a replacement for my radio which would allow me to play cd's and an ipod. I did not want it to look like a chav radio with moving pictures and flashing lights, so I'm thinking of this one... http://www.bluespot.co.uk/stock/kingston.asp anyone got any comments ??
Nice article ...is it possible to put a connection in to the lighting system (mine hasn't at the moment)
i have
http://www.pixmania.co.uk/uk/uk/234340/ ... radio.html
and have been pleased with it after a years use
The orange cable from the Blaupunkt loom is for radio illumination and is connected to the light circuit.
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Scoupe
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Post Wed Apr 04, 2007 11:04 am

Thats a good little write up, and a great little find on the Blaupunkt lead...a month earlier would've been great :p as I had to wire mine in completely ...and no I didn't use the hazard light swtich.

Placey is right, using female bullets on the car side is a good habit. However, personally, I would've gone for the soldering and then heat shrinking the wires. Not a dig, just another suggestion if people prefer!

Take it easy y'all!
jcjdavis1
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Post Fri Apr 06, 2007 8:57 pm

Hi I got the wiring loom and followed the posts but trying to get wires out of the plug it all went pear shape,and ended up cutting of plugs and just connecting wires with spade connectors and insulating tape.In the end it all worked out ok and radio is now working.I taped and cable tied everything so it is nice and neat.Good post though. :thumb:
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tristan325
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Post Wed Apr 11, 2007 9:32 am

Glad to hear I helped Jim!! :wink:
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