hi and lo beams together

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Forum Name: Vehicle Wiring Information & File Requests
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URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=104435
Printed Date: June 16, 2024 at 12:17 AM

Topic: hi and lo beams together

Posted By: tools
Subject: hi and lo beams together
Date Posted: May 02, 2008 at 3:44 PM

2004 Buick Century,want to run the low beams on with the high beams when switch to high beams and just the low beams on when switch to low, any idea which wires to cross?

Replies:

Posted By: i am an idiot
Date Posted: May 02, 2008 at 9:42 PM

I have no idea what color the wires are in your car, but the following diagram is what you need to do. You need to cut the low beam positive wire and connect the 2 ends to the relay as shown. You will have to do this on both sides of the vehicle.

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Posted By: tools
Date Posted: May 03, 2008 at 8:14 AM

Thanks but one more ?, when on low beam,will the low beam still come on without the hi beam on, does it still feed thru the relay somehow because afterall the low beam feed is cut,

Posted By: i am an idiot
Date Posted: May 03, 2008 at 6:27 PM

The low beam wire is cut, but the low beam lamp is connected to the common terminal of the relay, and the low beam wire is connected to the normally closed terminal of the relay. This means that the low beam wire is connected to the low beam lamp when the relay is in it's resting position. When the High beams are turned on this energizes the relay and now the low beam lamp wire is now connected to your battery.

Posted By: tools
Date Posted: May 03, 2008 at 7:43 PM

Thank you, got it.

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