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any way to wire a new radio without the jumper harness - Iv got a 08 silverado. Base model has onstar but not active. Iv been trying to wire up ...

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New radio installation

any way to wire a new radio without the jumper harness
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New radio installation

Postby 08chevy [OP] » Feb 14 2011, 11:59pm

Iv got a 08 silverado. Base model has onstar but not active. Iv been trying to wire up a aftermarket radio, well wired up the new one( cut no wires) and plugged it in. Got power but no sound at all. Hooked a house speaker to it and had sound from it. Redid everything still no sound. Thinkin imma have to blow the $175 for the harness. Don't want to though tight on $$ right now. So does anyone know a way around it?
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Re: New radio installation

Postby AustinAustin is online! » Feb 15 2011, 12:37am

How did you wire up an aftermarket head unit without cutting any wires and without using an aftermarket wiring harness? Something doesn't make sense there.

If you have OnStar, you need to use an aftermarket interface which retains the Retained Accessory Power (RAP) system and OnStar functionality. Scosche makes an interface and sometimes you can find them at Walmart for pretty cheap or order on Amazon.
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Re: New radio installation

Postby 08chevy [OP] » Feb 15 2011, 1:11am

I used wire clamps and ran an aux power on a switch. Everything worked but sound and the chime. Not to worried about the chime tho.
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Re: New radio installation

Postby 08chevy [OP] » Feb 15 2011, 1:13am

I fallowed wiring from the maker of the unit and truck colors from here.
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Re: New radio installation

Postby GMman » Feb 15 2011, 1:48am

I would check out Crutchfields for the right harness for your vehicle. They seem to have a great tech department too that will help you with any problems that come up .
Thank you
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Re: New radio installation

Postby morganw » Feb 15 2011, 1:54am

Is there a factory amp? if its not getting the remote on signal you wont get sound out of any speakers. type of HU you installed might help...
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Re: New radio installation

Postby 08chevy [OP] » Feb 15 2011, 2:14am

Putting in a pioneer Avis F700bt I just went to wal mart I can come up with the money for theirs fairly easy. Only $80 for the same thing and dash surround that the audio places want another $25 for. And I do not beleve there is a factory amp.
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Re: New radio installation

Postby morganw » Feb 15 2011, 2:44am

well there can only be so many things wrong. you only need power and ground and there is only 2 ways to hook up the speakers, and if its polarity is backwards they will still make noise.
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Re: New radio installation

Postby 08chevy [OP] » Feb 15 2011, 3:16am

Yea see thats where I'm thrown off. I tryed every way and nothing. So got to thinkin the unit was messed up threw a couple house speakers on it and wala worked fine. Went back to truck speakers and nothin. So I called it quits. And am Saving for the jumper.
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Re: New radio installation

Postby morganw » Feb 15 2011, 3:33am

thats what makes me think there is a factory amp.
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