Fog Lights

[captain6liter]

2004 ext cab 2500 hd long box 6liter 4by4.How do you modify your fog lights to stay on when your high beams are on?

[GM-Tech]

The fog lights are turned on by the BCM. If the BCM doesn't detect low beams (or parking lights) ON, it will not allow the fog lights to come on. And, when the BCM receives an input that the high beams are on, it won't allow the fog lights to come on.

 

I'm not sure how you'd get around this, though I don't doubt somone has found a way.

[ricko2]

www.highbeamkits.com can turn on lows, highs and fogs at the same time.

[captain6liter]

The fog lights are turned on by the BCM.  If the BCM doesn't detect low beams (or parking lights) ON, it will not allow the fog lights to come on.  And, when the BCM receives an input that the high beams are on, it won't allow the fog lights to come on.

 

I'm not sure how you'd get around this, though I don't doubt somone has found a way.

 

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Thanks guys !