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How To: Build and Hardwire an Auxillary Input to OEM Stereo

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Old 04-25-12, 11:17 PM
  #691  
Sicarius12
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I've read through the thread but haven't found reference of what amp relay to use.

3, 5, 15 or 30?

Thanks.
Old 04-30-12, 01:48 PM
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i believe I used 15 or 25amp relays, as they are handling unamplified sound high amperage shouldn't be needed.
Old 05-16-12, 02:55 PM
  #693  
ravig292
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PD, will these work?

http://www.ebay.com/itm/5-12V-BOSCH-...item45fb695cdf
Old 06-02-12, 03:43 PM
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yes those should work fine.
Old 06-04-12, 04:40 PM
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nordoyan
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PD, do you think the ECT switch can work as the SPST switch?
Old 06-05-12, 05:22 AM
  #696  
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possibly but the ECT switch (in the LS at least) isn't an SPST, it's a SPDT or SPCO switch.

if it has >2 positions, it won't work. (ECT in the LS is PWR, OFF, SNOW, so it won't work)
Old 06-06-12, 08:37 PM
  #697  
rescued
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Default 98 GS400 with Nak (no nav)

I have a 98 GS400 with Nak (no nav) and I'm just not seeing the pin outs that people are describing. I have a 12 pin on the glove 6 disk changer (first pic), but no white, black, green, red in pins 9,10,11,12. And there is no 12 pin connector on the head unit (biggest are 2 -10 pins) [second pic]. Am I missing something here?
Attached Thumbnails How To: Build and Hardwire an Auxillary Input to OEM Stereo-cd-changer.jpg   How To: Build and Hardwire an Auxillary Input to OEM Stereo-head-unit.jpg  
Old 06-13-12, 06:28 AM
  #698  
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@Rescued - just follow the harness(in ur first pic) to a silver box to the right of the cd changer. Then follow the output harness of the silver box to a male female connector in front of the box. That connector has the black, white, red, and green wires that you need to connect to. You can splice to either side of the connectors. I have a 98 GS 400 and I ran into the same problem thinking that I need to hook up to the harness coming out of the cd changer. Just pm me if you have more questions.
Old 06-22-12, 05:03 PM
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Hell yea, this will officially be my first mod. I cant stand the radio and whats a cd?
Old 06-26-12, 12:27 PM
  #700  
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Hey!
I have 1993 SC400 with Nakamichi headunit, 12cd changer and stock amp in trunk!
Can anyone can tell me which wires should I use to make this work?
I've read to page 14 and didn't found anything and google doesn't have anything too!
Could someone help? As I've already bought all necessary parts to do this

Last edited by S14DST; 06-26-12 at 12:58 PM.
Old 07-02-12, 05:30 AM
  #701  
S14DST
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Originally Posted by S14DST
Hey!
I have 1993 SC400 with Nakamichi headunit, 12cd changer and stock amp in trunk!
Can anyone can tell me which wires should I use to make this work?
I've read to page 14 and didn't found anything and google doesn't have anything too!
Could someone help? As I've already bought all necessary parts to do this
I found that someone used
Black R+
Blue L+
White R-
Red L-

Everything works fine, except I think signal is going straight to head without amplifier, as I have very quiet sound and absolutely no bass!
Could someone tell me how to wire correctly?
I used this diagram http://www.lextreme.com/Lexradiowcd.pdf
Old 08-05-12, 01:08 AM
  #702  
S14DST
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Originally Posted by S14DST
I found that someone used
Black R+
Blue L+
White R-
Red L-

Everything works fine, except I think signal is going straight to head without amplifier, as I have very quiet sound and absolutely no bass!
Could someone tell me how to wire correctly?
I used this diagram http://www.lextreme.com/Lexradiowcd.pdf
Bump!
Nobody had this kind of issue?
Maybe head unit should be turned all the way up or something else that I'm missing?
As all the wires are correct i.e the same color and connector
Old 08-07-12, 08:59 PM
  #703  
moffutt
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That looks like the same diagram I used on my 95 sc400 and it works great. I didn't put in the relays I just wired the aux straight into the head unit and cut out the cd changer.
Old 08-09-12, 11:00 AM
  #704  
S14DST
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Originally Posted by moffutt
That looks like the same diagram I used on my 95 sc400 and it works great. I didn't put in the relays I just wired the aux straight into the head unit and cut out the cd changer.
Yeah I tried to wire it straight in too (there is a DIY for that mod too)
Maybe sound was a tiny bit louder, but still very quiet and tiny amount of bass, compared to what my cd changer gives out... I just don't get why it doesn't works for me... maybe my laptop had to have volume turned up to 100% or something like that?
But when I had relays connected I tried with my iPod and even with max volume it was very quiet and minimum bass

At the moment I'm using cd's but I actually hate them
Old 08-12-12, 12:45 PM
  #705  
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sounds like you mucked up a ground wire or have polarities reversed on one side or more.


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