03 Silverado R/S - 2nd Acc needed?

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=66153
Printed Date: May 15, 2024 at 7:49 AM

Topic: 03 Silverado R/S - 2nd Acc needed?

Posted By: blsi
Subject: 03 Silverado R/S - 2nd Acc needed?
Date Posted: November 12, 2005 at 11:16 PM

Anyone know what the brown 2nd Accessory wire feeds on a 2003 Silverado 1500HD? I'm putting in a remote start (Crimestoppers RS-900V) and the wiring list shows the second Acc but the T-harness I have does not bring out the brown wire. I'm also using the programmable output for the second ignition and am using the negative output that could drive a relay to control the GMSL interface module. If I need the second Acc any thought on how I could hook it up using a relay from the remote start acc output without the relay being energized the entire time the truck is running?

GMSL module works great by the way- does both driver 1 and driver 2 (using the trunk button on the remote start to trigger the 2nd driver input to the GMSL).

This is my first remote start so thanks for the help.

Thanks

Replies:

Posted By: NowYaKnow
Date Posted: November 13, 2005 at 1:08 AM

Most of the time on the GM trucks you do NOT need to energize the brown wire when remote starting. Some times it is necessary though I always try it first without and if no lights stay on your good to go.

Mike

Posted By: KarTuneMan
Date Posted: November 13, 2005 at 1:43 AM

Power it up......

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Posted By: GMC4x4Guy
Date Posted: December 04, 2005 at 11:12 PM

Can you leave one of the Accy. wires disconnected so the radio doesn't come on? I'm asking because I'm under the impression that the driver's door would need a negative pulse to turn the radio off if the remote start times out.

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"Drive it like you stole it"

Posted By: cntrylvr79
Date Posted: December 04, 2005 at 11:47 PM

If i remember the truck right you do need to power the brown wire. I think it powers something that has to do with the climate controls. As for your pulsing of the door trigger to shut the radio off you would be correct in that assumption.

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Cause I'm So white and nerdy...
First Class Certi-fried installer

Posted By: extreme1
Date Posted: December 05, 2005 at 9:58 AM

No brown wire required.

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Shaughn Murley
Install Manager, Dealer Services
Visions Electronics
Red Deer, Alberta

Posted By: kgerry
Date Posted: December 05, 2005 at 2:39 PM

not needed... also, the proper data type of bypass module ( XK01, 457G, etc) will shut down the rap circuit for you automatically....

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Kevin Gerry
Certified Electronics Technician
MECP First Class Installer

Owner/Installer
Classic Car Audio
since 1979