03 Silverado Amp turn on wire
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=19359
Printed Date: May 20, 2024 at 10:45 AM
Topic: 03 Silverado Amp turn on wire
Posted By: DracosIgnis
Subject: 03 Silverado Amp turn on wire
Date Posted: September 27, 2003 at 10:49 AM
I have an 03 Silverado, in which I have installed an aftermarket amp for a sub. Does anyone know what color, or where I can tap into so that the amp will stay on once the ignition is turned off? (Rememeber, the radio remains on after the truck is turned off until the door is open, and I'd like for the amp to stay on too.) I
Replies:
Posted By: Velocity Motors
Date Posted: September 27, 2003 at 11:52 AM
Wire up a remote turn on lead for the amp like this: Radio On Until Door Opened------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: DracosIgnis
Date Posted: September 28, 2003 at 4:56 PM
I’m not doubting that would work, but is there an easer way to tap into the current oem system that is already in place that allows the power windows and radio work?
Posted By: Chris Luongo
Date Posted: September 28, 2003 at 6:28 PM
The RAP (Retained Accessory Power) relay is in the driver's side fuse box.
Pull the relay halfway out, so it still operates, but you can carefully slide a test light or meter against the terminals.
Test the terminals until you find the one that operates correctly. I think it is terminal #30, but not sure. If you don't have a tester, you could connect your amp turn-on wire to each terminal and try each one until it works right...it would take longer this way, but you won't hurt anything even if you get the wrong terminal.
After you have identified the right terminal, wrap a wire around it and reinsert the relay. Connect a small inline fuse---1, 3, 5, 7.5 amps----whatever you have on hand. Then connect the amp's turn-on wire to the other side of the fuse, and you're done.
The reason for the fuse is so that if your amp-turn on wire shorts out sometime in the future, the fuse will blow and of course your amp will shut off, but at least the rest of the car's accessories will remain operational until you can repair the problem.
Also, the RAP relay is probably protected by a very large fuse, which might not even blow out if your wire shorted...meaning your wire would melt and possibly catch fire.
So I'm not trying to frighten you or anything, just be sure to put that fuse inline right near the RAP relay.
Posted By: DracosIgnis
Date Posted: October 01, 2003 at 6:10 PM
Thanks for all the info.... BUT.... there are no relays in the drivers side fuse box... I've even pulled all of them under the hood (drivers side) hoping the radio would turn off, but still no luck. Even checked the fuse/relay panel on the drivers side floor board.... Any other ideas? Is this unit being coontroled by the data bus module?
Posted By: Chris Luongo
Date Posted: October 02, 2003 at 3:58 PM
I'm surprised; I've done a few Tahoes/Escalades for video systems and it was always in the driver's fusebox.
Look at the diagram again, on all the fusebox covers, for "RAP RELAY." But, sorry if I was mistaken.
Posted By: DanDan
Date Posted: October 02, 2003 at 5:23 PM
The only RAP relay that you can tap is for the sunroof and it is located on the right side pillar next to the glovebox. But this is for the Escalade and Yukon, I do not know about the Pick Up. I will research it for you. The fuse block on the drivers side has no such relay. In the lower left part of the dash on the firewall is a convenience center but it contains no Rap Power, only ignition voltage. The radio uses class 2 data in order to communicate with the vehicles BCM and other computers. The radio is also controlled by class 2 data. Someone makes an adapter to utilize the the class 2 data but I have not used it and cannot remember who makes it.
DanDan
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