headlights flash in evening viper 791xv

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=120874
Printed Date: April 28, 2024 at 12:25 AM

Topic: headlights flash in evening viper 791xv

Posted By: sstuner
Subject: headlights flash in evening viper 791xv
Date Posted: March 22, 2010 at 11:46 AM

Just finished installing a Viper 791XV on my 2006 Chevy Silverado 2500HD Duramax/Allison, but have one annoying problem. During the evening hours when I remote start, the headlights flash, but during daylight hours the DRLs flash. My son and I have checked the wiring and the Viper 791XV is connected to the Body Control Module pin B2 gray/black wire. This wouldn't be an issue but I have HIDS and afraid of burnout with the flashing. I have disconnected this wire until this can be figured out.
Any ideas?

Replies:

Posted By: awdeclipse
Date Posted: March 22, 2010 at 12:25 PM

Did you hookup headlights instead of parking lights? Is the Viper 791XV programmed for constant or flashing output from the parking light wire?

Posted By: sstuner
Date Posted: March 22, 2010 at 2:05 PM

awdeclipse wrote:

Did you hookup headlights instead of parking lights? Is the Viper 791XV programmed for constant or flashing output from the parking light wire?

According to all info I have, pin 1 (gray/black) on B2 of BCM is "parking lights( -)"

Posted By: awdeclipse
Date Posted: March 22, 2010 at 2:19 PM

Did you confirm this wire? What happens when you ground that wire, does it flash the parking lights? Did you select the correct polarity for the parking light wire?

How does the truck behave when its started with a key during day/night? Are the DRLs/Headlights constant on?

Posted By: JWorm
Date Posted: March 22, 2010 at 7:19 PM

You need to program the 791xv to "constant parking light" output. It is set to flash by default.

Posted By: another-kelly
Date Posted: March 22, 2010 at 9:40 PM

JWorm] wrote:

You need to program the 791xv to "constant parking light" output. It is set to flash by default.

this