2004 Tahoe

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Joe Neal

Copper - Posts: 113

Joined: October 15, 2004

Location: United States

Posted: November 02, 2004 at 8:38 PM / IP Logged

Installed 10.4 Video into 2004 Tahoe, Monitor has Dome Lights that are Negative Ground. I Installed a Relay to convert + to Neg. But....Tahoe has Dome lights that are Positive and they DIM down to 0 volts causing the Relay to BUZZ when they go off

HELP???

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Velocity Motors

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Joined: March 08, 2002

Location: Manitoba, Canada

Posted: November 02, 2004 at 9:12 PM / IP Logged

Can you tell us how you wired the relay ? If the input signal goes to ground on a relay that converts a (+) to a (-) then, the relay should do nothing because all 4 terminals will be (-). Another way to hook up the dome light system is to grab each door individually.

The driver door trigger is gray/black at the driver door module in the door. The RF door trigger is BLACK/ white at the passenger door module in the door. The LR door trigger is lt. blue/black, pin A3, and the RR is lt. GREEN/ black, pin A2, they are in the purple plug at the BCM. Use all four wires and diode isolate each

Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

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Joe Neal

Copper - Posts: 113

Joined: October 15, 2004

Location: United States

Posted: November 02, 2004 at 9:42 PM / IP Logged

Pin 87 to ground

Pin 86 to ground

pin 30 to Video Dome Lights

Pin 85 to Positive Dome light wire Gray/Black

When the Dome light fades out the relay starts to BUZZ and stops when lites are off. It's only about 2 - 3 seconds of buzz. I thought it was a bad Relay, replaced it & it still does it. I guess it is because th voltage slowly drops from 12 to 0

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FairWeather

Member - Posts: 19

Joined: October 15, 2004

Location: United States

Posted: November 02, 2004 at 9:43 PM / IP Logged

I highly recommend pulling all 4 door triggers individually. Pin A1 on the purple BCM is the liftgate and liftgate glass trigger. You might want to tie it in too.

You can do it!

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Joe Neal

Copper - Posts: 113

Joined: October 15, 2004

Location: United States

Posted: November 02, 2004 at 9:52 PM / IP Logged

WOW....R U saying I have to go to all the doors just to make the Dome Light come on? Maybe I should just leave it and use the Manual switch on the unit.

I thought maybe there was a different Relay or smoething.

THANKS for the Help

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2004 Tahoe

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