Retained Accessory Power

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=40604
Printed Date: May 18, 2025 at 4:15 PM

Topic: Retained Accessory Power

Posted By: cfvwd
Subject: Retained Accessory Power
Date Posted: October 09, 2004 at 10:40 PM

Can any one tell me where I can find RAP in my 2003 GMC truck, it has a in dash RDS 6 disc changer.

I need the RAP to power my XM sat receiver, I have been to all the usual places and no luck, I have been told that it is not possible to get RAP as all accesorys are powered of the bat and then are turned on or off by the BCM or door modules.

I have also been told that the guys at PAC make a interface cable for an aux audio in that also provides RAP.

Does any one have what kind of a signal there is on the data buss line.

Thanks

Chuck

Replies:

Posted By: kgerry
Date Posted: October 13, 2004 at 2:21 PM

the RAP is not an external circuit...it is done on the E&C buss thru Class II data........

-------------
Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979

Posted By: premieremind
Date Posted: October 13, 2004 at 9:42 PM

Have you tried Brown wire at key cylinder....stays on till door open