CHEVY AFTERMARKET RADIO WIRING HELP

2000 Chevrolet Venture

Tiny

Stepjam

February, 28, 2009 AT 11:12 AM

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.

FOUND 96 RELATED QUESTIONS

34 Answers

Tiny

merlin2021

February, 28, 2009 AT 11:30 AM

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

Tiny

Stepjam

February, 28, 2009 AT 11:37 AM

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!

Tiny

Stepjam

February, 28, 2009 AT 12:45 PM

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!

Tiny

merlin2021

February, 28, 2009 AT 12:54 PM

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

Tiny

Stepjam

February, 28, 2009 AT 12:58 PM

You're the best man, thanks!

Tiny

merlin2021

February, 28, 2009 AT 2:12 PM

Let me know how you make out. And thanks!

Tiny

dastover07

October, 25, 2009 AT 3:58 PM

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?

Tiny

merlin2021

October, 26, 2009 AT 6:43 PM

Check your email.

Tiny

helstar

November, 13, 2009 AT 7:35 PM

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

Tiny

merlin2021

November, 14, 2009 AT 6:45 AM

Check email

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