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Fog lights coming on when i step on the brakes?

KadenGT

New member
i have after market Fog lights connected into my stock harness using a quick connect which has a plastic tubing over it and thats sealed shut with electrical tape. and i recent installed LED bulbs into my taillights which i do have the rear side marker as an LED also, it has the sequential tail light mod listed on here. but whenever i step on my brakes my fogs come on not every time only when i first start braking then my digital climate control goes blank and the gear indicator in the gauge cluster dims also then i let off the brakes and it goes back to normal but then the digital climate control also flickers when i use my turn signals and it only started this when i put in the LEDs for my brake lights. so i am thinking there is something up with bulbs or the wiring for the mod needs to undone and the wire needs to be soldered with heat shrink put over them. I am just curious as to why that would make my fog lights come on.. and if you guys think its the wiring of the bulbs. i also had the battery tested at work with a systems test. and my battery needs to be replaced could that be another factor? i wouldn't think LEDs would draw that much current they are all 12V bulbs from GPThunder so just some input would be nice..sorry for all the grammatical errors in this.
 


Being that the problem started with the install of the LED bulbs, I would guess that they are backfeeding. Sounds like your "stop light" circuit is backfeeding to the "park light" circuit, which can go everywhere. Try a diode on the "park light" wire at each tail light socket.

isolation-diagram1.jpg


tail-light-diode-diagram.jpg
 
Being that the problem started with the install of the LED bulbs, I would guess that they are backfeeding. Sounds like your "stop light" circuit is backfeeding to the "park light" circuit, which can go everywhere. Try a diode on the "park light" wire at each tail light socket.

isolation-diagram1.jpg


tail-light-diode-diagram.jpg

Is there a certain diode should get?
 
i'm gonna say its the sequential tails

as backinblack himself reports problems like this especially with digital climate
 


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