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Alpine HU with stock BOSE

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Old Oct 6, 2008 | 09:34 AM
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Default Alpine HU with stock BOSE

This harness for $12
http://www.discountcarstereo.com/detail.aspx?ID=1081

Then they mention the SVEN2 for another $26.It's just an adjustable LOC.Why is it needed?
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Old Oct 6, 2008 | 09:38 AM
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beacuse u need the sven 2 to intercept the highlevel outputs and convert it to low level for ur oem bose subs
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Old Oct 6, 2008 | 10:28 AM
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High level from the Alpine to Low level for the Bose amp correct?

That means the rcas are getting cut?
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Old Oct 6, 2008 | 10:50 AM
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So really all I need is an adjustable LOC?
Would a non-adjustable work right?

I think I have both but my adjustable is powered.
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Old Oct 6, 2008 | 12:14 PM
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u want an adjustable LOC to be able to dial it in

but with that all said if u reverse engineer the way u have the rca's on your oem harness for your aftermarket amp if you plugged those into the rca output for the radio it would fire ur bose subs and all u would need is a standard gm harness
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Old Oct 6, 2008 | 01:20 PM
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You're saying to use the low level RCAs output from the Alpine HU and run them into the leads for the Bose subs?...kinda like taking the RCAs from the amp install and putting them flipped around to the Bose sub inputs/wires?
Then just use the other outputs from the Alpine to run the amp for the 12".

What wires(color) do I tap the RCAs into for the Bose subs.What about the common ground?.
I assume I could just do all this behind the HU?
What about the leads for the Bose highs in the doors?

Thx for your help BTW.
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Old Oct 6, 2008 | 01:23 PM
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you need a standard gm harness and wire up all the speakers from it this powers highs in doors and rear coaxs

take rcas from headunit and run em to the leads u spliced behind the headunit its the same wires, its all in my writeup
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Old Oct 6, 2008 | 02:12 PM
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I'm just going to unplug the 12" amp rcas and put them to the HU if I'm reading this right.They still get their feed of the new Alpine HU.
The door highs and the rear coax are still Bose amp'd correct? Just the door Bose subs need a low-level input right?



What number is that standard GM harness?If it's the one I think you can find it anywhere in town...heck wally-world has it.I just wasn't sure it matched up to the Bose wiring connector.
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Old Oct 6, 2008 | 03:52 PM
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u have multiple connectors the big one is a standard gm sold at wally world part number should be in faq. its the same one used in a 97 cavalier or s10 as corvette wont be listed as an application for it. connect the rcas from ur subs straight to the radio, wire up the gm harness and make sure to connect the power antenna/amp turn on wire from the gm harness to the remote wire on ur radio. (if ur radio has an amp turn on/remote and a power antenna wire make sure to use the amp turn on/remote lead)

then the little rca connectors u spliced into the bose sound processor plug from earlier connect those to the front preout from ur radio and ur bose door subs should work.

the bose amp only powers the door subs, the regular speakers DO NOT run through the bose amp
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Old Oct 6, 2008 | 04:55 PM
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Ok, I'm on the right track.I guess I could go ahead and upgrade the door highs and the rear twiddlers but not much sense in doing that.I'll do components soon with another amp.

What about the center dash sub?Not that it is needed but curious.
I got ahold of one of the Alpine CDA-D857's for good price.
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Old Oct 6, 2008 | 08:07 PM
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what center dash sub
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Old Oct 7, 2008 | 04:40 PM
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Ya know, I have no idea where I read about a center dash sub.

I've lost my mind apparently.
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Old Oct 7, 2008 | 06:57 PM
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honestly i would just run the standard gm harness and dont worry about the bose subs, u have aftermarket sub and as u said components and an amp eventually
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Old Oct 8, 2008 | 02:22 PM
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I'm not sure how long that will be to do components.

By using the split rca's to the Bose door subs doesn't this give a low level and high level signal to the both bose high and low speakers in each door?I can't remember off hand if there are seperate leads for the high and low for the doors or what.

I split the rcas into the clear shielded for common ground(intially I did the lt blue but had a whine) and tan/blk &Lt Grn for +.
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Old Oct 8, 2008 | 04:59 PM
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that clear shielded is not a common ground, u should be going to the frame of the radio

the only thing powered from that smaller harness is the signal for the bose subs, the rest of the stereo is non amplified and gets it signal from the bigger harness

if u get a standard gm harness and wire it up everything will work except the bose subs which comes from the smaller harness
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Old Oct 10, 2008 | 12:28 PM
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Power lead for the Alpine HU will go to what? to fuse 22?
The illumination wire goes to the cream wire of the HVAC harness.
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Old Oct 10, 2008 | 12:36 PM
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its all in c5 faq, go to igintion harness or the 3 wires in the passenger kickpanel/fuse box area
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Old Oct 10, 2008 | 12:59 PM
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That is where I got the fuse22 from.It said upper left hand side of the fuse box...well my #22 is in the middle so I stopped.It is BCM L3 10amp.

The C5 faq gives many ways with if and buts...I like the way you did your section but you stop shot of the power and illumination part.The illum I have no issue with.
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Old Oct 10, 2008 | 01:28 PM
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I never could get the rca outputs on my Alpine to fire up the bose with those adaptors. I used the speaker leads and it sounds fine. Here is a thread that hopefully will shed some light on tghe ins and outs-

http://forums.corvetteforum.com/show...pheral+harness
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Old Oct 10, 2008 | 01:50 PM
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Like PV says, I might just skip the Bose subs as the 12" CV in he back will overrun it in short order.

But for clarity, My Alpine has a 4v pre-out.It's the 1.5 DIN one.
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