I know this is an old topic, but after literally 2 days of searching and joining random @$$ forums to access data, I have still yet to come across a simple solution for the 2002 (Non-diode capable) mod of getting the fog lights to stay on when the highs are activated. Again, I have a 2002 2500HD that the diode trick does not work on. Already have the whole "quad" light thing working with high/low beams, but was looking to get the fogs to stay on when the highs are on. If anyone knows how, or has a link to where that damn thread is, please let me know. Thanks again and sorry for an old post.

JP

 

I can tell you as soon as i get to my truck tomorrow if i remember to look. It is a wire on the bcm that you cut and ground directly. Let me see if i can find it.

 

Here it is.

http://www.fullsizechevy.com/forum/g...foglights.html

 

Thanks for that response, but I have come across that one. That one engages them as long as your parking lights or head lights are on, no matter what. I am looking for them to only come on when the high beams/quads are engaged. Thanks again for that reply though.

JP

 

There isnt one. The only way you can do it that way is to put a relay on them and have the high beam the trigger to keep them on.