I did the 4 high mod today. ( 2004 GMC Sierra ) Everything works great. My question is : If I turn my headlights on (and do not turn fogs on), when I switch my highs on the fogs come on. ( I did the highs and fogs mod btw ) Is that normal? I can still use my switch to turn the fogs on tho. This really isnt a big deal, just want to know I did things correct. Thx, Shawn.


p.s. heres the thread I used for reference. https://www.performancetrucks.net/forums/show-shine-discussion-129/headlight-mod-$1-245919/

 

Thatd be 6high mod. How mine is. Have lows on and fogs optional but when using Highs all 6 come on. Highs,lows, and fogs at once.

 

You must have your highs connected to the fogs. If you only want the 4 high mod then you dont need to connect anything to your fogs but like static said you technically are set up as a 6 hi