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Old 13-06-2005, 08:51 AM   #1
wheelo
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HOW TO: Removing SP20 Head Unit

Could someone please point me in the direction of a "how to" remove the standard 6 disc in dash head unit from my 2003 SP20? I want to keep the head unit but I want to run the front speakers and a sub through an amp. So i need to re-wire.

muchos gracias in advance
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Old 13-06-2005, 12:23 PM   #2
twilightprotege
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remove the surround by holding on to the air vent spots

remove the side tabs on the hu

big flat head screw driver in the side and the clips pop out.

and you're done. very basic explaination, but you'll get the idea when you see it.

ps - welcome! where are you from?
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Old 13-06-2005, 03:16 PM   #3
wheelo
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Thanks for your help twilightprotege

I got the surround and the side tabs off but I'm not sure about the big flat head screw driver in the side.

Do you just slide it into the middle of one side and lever it out? The HU seems to be pretty well secured.

Thanks for the welcome, I live on Sydney's Northern Beaches. I've just reluctantly sold my MX-5. The SP20 was a decent compromise to get some more space for carrying passengers and junk.
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Old 13-06-2005, 03:37 PM   #4
Fro-Daddy
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can the stereo be replaced with 2 single DIN units? anyone got a wiring diagram?
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Old 13-06-2005, 04:42 PM   #5
anaerobic_animal
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you should be able to replace the double DIN with two singles. im looking at going teh standard deck and then one of those hard drive mp3players aswell from alpine if it can be done
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Old 13-06-2005, 07:35 PM   #6
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yeah it's just a leaver it out thing. you're actually pushing back spring metal thingies and they pop out. you then do the other side and the hu comes out. i can get mine out in under 30 seconds np.
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Old 13-06-2005, 08:28 PM   #7
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Quote:
Originally Posted by twilightprotege
i can get mine out in under 30 seconds np.
That's our boy!
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Old 13-06-2005, 08:53 PM   #8
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Noice!!!! cheers Wheelo for bringing this up... plus Twiggy and Gav for da advice..

looking at doin this down the track with an upgrade once i get more coin together
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Old 21-06-2005, 07:52 PM   #9
wheelo
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I got the HU out with a screwdriver eventually but I would only recommend the experienced do it this way as I damaged the HU, rendering it inoperable until we took it apart and straightended it where the levering of the screwdirver had caused the front panel circuit to detach from the rest of the HU and put it back together again.

I think their is a tool similar to what comes with a blaupunkt HU that makes this operation easier and safer. A U-shape piece of steel similar to coat hanger wire.

The wiring up to the amp looks like it would be fairly complicated so I'm going to start with replacing the front door speakers with 6 1/2" JBL's to see what improvement I get prior to undertaking a major wiring exercise.
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Old 21-06-2005, 08:19 PM   #10
twilightprotege
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the front panel shouldnt have been used as leverage. the leverage is on that spring clip and the plastic surrounding the hu on the dash.
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Old 22-06-2005, 10:08 AM   #11
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peoples you go to to much hassle. there is a proper tool that mazda have and they will do it for free if you ask nicely.
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Old 22-06-2005, 10:23 AM   #12
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seriously, to get it out takes 10 seconds tops using the screw driver method. peice of cake.
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Old 22-06-2005, 10:51 AM   #13
arden
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ur just a genius twiggy..
i cant get mine out that fast....takes me at least 15-20min.
real PITA
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Old 22-06-2005, 11:01 AM   #14
twilightprotege
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yeah i know. it's tough (being a genius), trust me!
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Old 23-06-2005, 10:40 AM   #15
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Atleast you phuckers with the SP20 don't have to go through what I did to change the headunit! Hmmm, I want climate control...

Gav.
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Old 23-06-2005, 10:43 AM   #16
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that was to change the HU surround.
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Old 23-06-2005, 11:16 AM   #17
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HU surround is a bitch of a job
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Old 23-06-2005, 04:07 PM   #18
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so what size are the front speakers? what power (rms) does the stocko h/u put out? im guessing about 16-20rms or summin at the most...

anyone got a wiring diagram for the wires goin into the h/u? is it a plug or MUST you cut the wires when you change over h/u's?

ta
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Old 23-06-2005, 04:36 PM   #19
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The fronts are 5x7", if you need help getting the door skins off I can help out.

Gav.
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Old 23-06-2005, 04:56 PM   #20
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5x7" rect? thats a tad strange for factory's...whats the biggest round speaker you can fit in? ie, is it a 7" hole all round or get smaller in some places?
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