2003 Silverado Problem

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=59473
Printed Date: May 14, 2025 at 2:22 AM

Topic: 2003 Silverado Problem

Posted By: One Kwick SS
Subject: 2003 Silverado Problem
Date Posted: July 15, 2005 at 3:13 AM

I just finished installing an alarm on my g/fs truck...a 2003 silverado and i have two problems.

1. I could not find the wire for the parking lights. All over this sight it says the gry/blk wire on the brown connector at the BCM. i found with an multimeter, that this line has a constant 12V on it. When the lights are turned on, it drops to 0 then right back up to 12V. Hooking the wire from my alarm does nothing.

2. If i try to alarm the vehicle right after getting out, it is fine for a few seconds, then my transmitter chirps (its a two way alarm system), and the siren chirps a few times. I then have to re-arm the system. It also does this if i try to rearm it right after i disarm it.

thanks if anyone can help.

Replies:

Posted By: mo12v
Date Posted: July 15, 2005 at 8:28 AM

I usually hook up at the Switch:

Parking Lamp

GRAY/BLACK (-)

HEADLIGHT SWITCH *

* Parking Light Wire Has Also Been Found As A BROWN / WHITE (+) High In Kick

Does your Dome Light stay on after Arming and then when it goes out your Alarm chirps?

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: KarTuneMan
Date Posted: July 15, 2005 at 8:41 AM

grey/black NEG(-) at the switch.

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Posted By: One Kwick SS
Date Posted: July 15, 2005 at 2:08 PM

but the lights have a negative trigger. The alarm has a positive trigger. Am i gonna have to use a relay or is there a way to positively trigger it

Posted By: wiretapper
Date Posted: July 15, 2005 at 2:14 PM

One Kwick SS wrote:

but the lights have a negative trigger. The alarm has a positive trigger. Am i gonna have to use a relay or is there a way to positively trigger it

If your alarm doesn't have a way to trigger pos OR neg, you'll need to use a relay to change it to neg.

Posted By: One Kwick SS
Date Posted: July 15, 2005 at 4:36 PM

i figured it out, i just ran it up to the brown wire on the bulb harness lol. They are all tied together so it lights all 4 corners.