2004 Silverado RAP

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=38510
Printed Date: May 02, 2024 at 1:32 PM

Topic: 2004 Silverado RAP

Posted By: DracosIgnis
Subject: 2004 Silverado RAP
Date Posted: September 02, 2004 at 3:29 PM

I've searched to formus, and I've noticed the question has been asked serveral times a few months back, but no replies with answers. Has anyone found a solution that works?

I'd like to find a wire/circuit to tap into that would allow my amp to stay on after the key is removed and before the door opened.

Thanks (In advance)!

Replies:

Posted By: JWorm
Date Posted: September 02, 2004 at 8:56 PM

Could you be any more vague?

Do you have the factory Bose system?

Do you have an aftermarket deck?
If no, how did you tap into the audio signal from the factory deck?

If you have an aftermarket deck, what wire harness did you use to install the radio?

Posted By: DracosIgnis
Date Posted: September 02, 2004 at 9:33 PM

Well, I guess it was at least a response!

I can almost tell you what happens next. I answer your questions, and you (or someone else) will reply with yet another comment that has nothing to do with helping to identify the RAP circuit. So, let me answer your question and prove the theory.

Yes, I have a factory Bose system. I used pac-audio part OEM-1 which connects between the deck and the factory harness (no splicing necessary). Currently, I have the amp on an accessory circuit from the fuse box, but would really like for the amp to stay on with the radio after the truck is turned off, and before the doors are opened. So... if someone who has actually found a place to tap into the RAP circuit might please share, or what options they might have used in order to accomplish this, it would be greatly appreciated to all those looking for the answer.

Posted By: DracosIgnis
Date Posted: September 02, 2004 at 9:36 PM

Well, I guess at least it was a response!

Not sure what type of speakers, or what type of deck, or even how I tapped into anything has to do with identifying the RAP circuit on an 04 Silverado. Guess the real answer is that it's still not known, since these are the same old questions and answers everyone seems to receive.

I can almost tell you what happens next. I answer your questions, and you (or someone else) will reply with
yet another comment that has nothing to do with help in identifying the RAP circuit. So, let me answer your question and prove the theory.

Yes, I have a factory Bose system. I used pac-audio part OEM-1 which connects between the deck and the factory harness (no splicing necessary). Currently, I have the amp on an accessory circuit from the fuse box, but would really like for the amp to stay on with the radio after the truck is turned off, and before the doors are opened. SO, NOW then, can someone who has actually found a place to tap into the RAP share, or what options they might have used in order to accomplish this.

Posted By: auex
Date Posted: September 02, 2004 at 9:39 PM

Can't find a RAP wire then build your own. Check the relay section to the left.

Oh, and don't mouth off to superiors. He was simply asking for more information then you offered in your post.

-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: JWorm
Date Posted: September 02, 2004 at 9:50 PM

I love smart ass responses. There was a point to my questions. I'll still help you anyway.

The wire that keeps the radio on is a data signal. But I'm sure you read about that in all those other posts without answers. I'm not sure if the RAP system puts out a +12v system anywhere in the vehicle...but it definately doesn't at the radio.

Go to www.pac-audio.com and look under Products. Go down to Trigger Modules. You will find the Tr-4 under it. Connect it to a speaker wire in the vehicle and your amp will turn on and off when the deck turns on and off. Many other companies make similar devices. DEI's is part number 55000a or b.

Posted By: auex
Date Posted: September 02, 2004 at 9:54 PM

JWorm] wrote:

I love smart ass responses.

There are too many of those tonight. So out comes "a***ole auex".

-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: xtremeaudio
Date Posted: September 03, 2004 at 12:02 AM

if you have oem radio tap to 12v on the back oem radio

Posted By: diabloscope
Date Posted: September 03, 2004 at 4:07 AM

it is a 12v + ouput is should be in the bigger harness of the two behind the radio (PLEASE test w/ a meter to be sure !!!! cause there are a couple of green wires ) wire to a relay (30) 12v constant , (85) ground , (87) Amps , (86) output from radio , (87) n/a

you can do this to power accys like video components DVD, VCR, TV tuner, XM to be powered after the key is off and will stay on till you open door!!!

Hope this helps!!!

Posted By: DanDan
Date Posted: September 03, 2004 at 8:14 AM

RAP (Retained Accessory Power) is controlled by the BCM which is located under the steering column. There is no wire that you can tap behind the radio as they use data to tell the radio to turn on as well as the Bose amp. You can go directly to the BCM and using a relay tap the RAP wire and do it that way. The signal the BCM gives is a positive output and a normal relay can be used. If you would like me to I will post the exact location of said connection to supply you with a RAP signal to trigger a relay.

DanDan

Posted By: another-kelly
Date Posted: September 04, 2004 at 12:41 AM

just for those who didn't know (xtreameaudio & diabloscope) GM introduced that system into some of it's vehicles in the late '90's. now pretty much all of them have it. the radio stays on after you turn the vehicle off until you open a door. however it only has on +12v wire going to the radio that just changes "data"on the wire to turn the radio on/off.

Posted By: mobilevt
Date Posted: September 04, 2004 at 1:34 AM

Really?

Would applying power to the accessory wire on the steering column keep the radio & factory DVD player on without the key?

This is so my kids can continue to watch / listen to the entertainment system.

I was planning on installing a 2 hr time delay to keep the equipment on until the time passes or I switch the power to the ACCY wire off.

Sean

-------------
Emergency Vehicle Technician
Got Freedom? Thank a vet!

Posted By: gruv2ths
Date Posted: November 09, 2004 at 2:20 PM

Being the lazy a$$ that i am, please provide the wire color and module location

Would anybody happen to know about the protocol of the data bus 2 or ant of its commands??

Thanks!

-Stephen

Posted By: gruv2ths
Date Posted: January 02, 2005 at 8:07 PM

DanDan or anyone that knows... Which wire on the BCM mod is a wire that can be used as a ACC or RAP wire? I probed a little on it and found a wire which at the time acted like the RAP wire, turns out its that headlight signal wire. (So now my amp and EQ only work at night... wah wah wwaahhhhh Ha Ha)
Any help would be great!!
-Stephen