Chevy aftermarket radio wiring help

Tiny
STEPJAM
  • 2000 CHEVROLET VENTURE

Electrical problem
2000 Chevy Venture 6 cyl Front Wheel Drive Automatic 90k miles

This is complictaed, for me at least.

I have a 2000 Chevy Venture with a factory AM/FM CD player, no OnStar, no Bose, no Alarm.

I need to supply switched 12v power to an aftermarket stereo that I want to install. I tried using several different aftermarket modules (Metra, Scoshe, etc.) For this, and none have worked. One even caused my DIC to display erroneous messages, such as "security" and "low fuel", and caused my fuel gauge to read empty.

Apparently some computer lines were routed through the factory radio. There is a 24pin connector on the harness with eighteen wires, I only need twelve: eight for speakers, one for 12v constant, one switched 12v, ground, and illumination. I know there is no connection for a "switched" 12v source (accessory) in this vehicle.

My chimes all work even with the radio removed. I tested the grounds in the radio harness (two b/w wires), and I have fluctuating resistance readings in them, which suggests to me that these don't go directly to a chassis ground. There doesn't appear to be any problems with the factory radio removed and the harness disconnected.

Is it possible to wire directly to the RAP relay to get my switched 12v power, and can you tell me where the realy is located? I also want to try going direct from the radio ground to the chassis. I have tried finding a wiring diagram that shows something other than the generic twelve wires I listed above, but no luck.

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Saturday, February 28th, 2009 AT 11:12 AM

34 Replies

Tiny
MERLIN2021
  • EXPERT
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This is what I came up with for the basic radio system? If you need the premium, I will get it for you.


http://www.2carpros.com/forum/automotive_pictures/62217_radioa_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_radiob_1.jpg

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-1
Saturday, February 28th, 2009 AT 11:30 AM
Tiny
STEPJAM
  • MEMBER

This is EXACTLY what I had in mind, thank you very much!

I believe I have the "Premium" system, which has a CD player. Could you by chance supply me with larger copies? The one that is posted is too small to read.

Thanks again!

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Saturday, February 28th, 2009 AT 11:37 AM
Tiny
STEPJAM
  • MEMBER

One last thing:

Can I tap off of the RAP relay to get switched accessory power for the aftermarket stereo? And where is the RAP relay located in a 2000 Venture?

Thanks!

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Saturday, February 28th, 2009 AT 12:45 PM
Tiny
MERLIN2021
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Just use the fused ACC wire, shown highlighted in yell/pink


http://www.2carpros.com/forum/automotive_pictures/62217_rada_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_radc_1.jpg

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+3
Saturday, February 28th, 2009 AT 12:54 PM
Tiny
STEPJAM
  • MEMBER

You're the best man, thanks!

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Saturday, February 28th, 2009 AT 12:58 PM
Tiny
MERLIN2021
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Let me know how you make out. And thanks!

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Saturday, February 28th, 2009 AT 2:12 PM
Tiny
DASTOVER07
  • MEMBER

Hi,

I could also use this diagram for my Venture. The original poster asked for a larger image of the diagram. Is it possible to get that?

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Sunday, October 25th, 2009 AT 3:58 PM
Tiny
MERLIN2021
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Check your email.

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Monday, October 26th, 2009 AT 6:43 PM
Tiny
HELSTAR
  • MEMBER

I to need a larger pic of the wiring sch. I need to find a acc switched too.

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Friday, November 13th, 2009 AT 7:35 PM
Tiny
MERLIN2021
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Check email

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Saturday, November 14th, 2009 AT 6:45 AM
Tiny
TOGO
  • MEMBER

Could you please send me the diagrams? I need looking on them for the switched 12 Volts line.

Thanks

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Saturday, March 6th, 2010 AT 10:13 PM
Tiny
MERLIN2021
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Sent!

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Sunday, March 7th, 2010 AT 8:06 AM
Tiny
QTRHOS
  • MEMBER

Merlin, would it be possible for you to also send me an email of a larger diagram for the 2000 Venture with premium radio. I have the one with the video system installed. I had a shop mount a new radio in the car but they say they cant get the rear speakers to work. I will just redo it myself.

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Friday, March 19th, 2010 AT 7:10 PM
Tiny
MERLIN2021
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Sent

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Saturday, March 20th, 2010 AT 9:54 PM
Tiny
DCFIELD21
  • MEMBER

Can I get the enlarged pic of the Chevy Venture stereo wiring Diagram?
Thanks.

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Sunday, July 25th, 2010 AT 11:04 PM
Tiny
MERLIN2021
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Sent, check email.

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Monday, July 26th, 2010 AT 2:23 PM
Tiny
CRIDERMOM1
  • MEMBER

Could you email me the wiring diagram? Thanks
cridermom1@yahoo. Com

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Tuesday, August 31st, 2010 AT 5:59 PM
Tiny
PJW73NH
  • MEMBER

Hello Merlin2021, Any chance I could get a bigger copy of the non premium schematic? Thanks in advance. Pjw73nh

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Wednesday, February 16th, 2011 AT 2:57 PM
Tiny
MACK33
  • MEMBER

I too need a larger pic of the wiring sch. I need to find a acc switched too.

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Thursday, May 12th, 2011 AT 7:01 PM
Tiny
MACK33
  • MEMBER

Merlin2021 could I also get a larger picture to mackaveli313@yahoo. Com. Thanks buddy! ( Or anybody else please send I need asap) thankz.

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Thursday, May 12th, 2011 AT 7:04 PM

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