Gain extra benefits by becoming a Supporting Member Click here find out how!

Classic Performance Products Nu-Relics Power Windows
American Auto Wire Hellwig Products IncPerformance Rod & Custom
Danchuk Catalog



Username Post: Fog lights come on automatically        (Topic#368970)
YOUNG57 
Frequent Contributor
Posts: 1346

Loc: Tennessee
Reg: 12-06-10
07-17-22 05:53 PM - Post#2844515    

I want my fog lights to come on automatically with the low beams in low light driving conditions for better night time visibility and stay on with the high beams.

Looking at how-tos on YouTube they only show connecting the fog light relay trigger wire (pin #10) to the high beam relay trigger wire (pin #18) on the brown plug at the BCM so they only come on manually when you turn on the high beams or manually push the fog light button.

Or connecting them to the DLR relay trigger wires (pin #22) so they come on automatically anytime the vehicle is in drive, even during day light driving.

Neither of these is what I want. I want my fog lights to come on automatically with the low beams in low light driving conditions

I need the low beam relay trigger wire pin number on the brown plug at the BCM.




 
Tony1963 
Frequent Contributor
Posts: 1664

Loc: Orlando Florida
Reg: 07-09-18
07-18-22 01:58 AM - Post#2844524    
    In response to YOUNG57

The reason that the fog lamps do now come on with the high beams is because your distance vision will be inhibited by the bright forward light of the fog lamps.

That is the reason that they go off when high beams are selected. The fog lamp illuminates the lower front area of the vehicle.

Even my Mercedes turns out the fog lamps when you select the high beams.

People fear change because it threatens what they know, or what they claim to know.


 
Matt 
Member #2440
Posts: 7880
Matt
Loc: SAV
Reg: 09-26-01
07-18-22 11:29 AM - Post#2844568    
    In response to Tony1963

@YOUNG57 - what year truck?

My '16 Sierra has a resistor in the fuse box that the fog lamps come on anytime the lights are on. I'll check what it is when I get home if I remember.



 
YOUNG57 
Frequent Contributor
Posts: 1346

Loc: Tennessee
Reg: 12-06-10
07-18-22 02:05 PM - Post#2844577    
    In response to Matt

@ Matt

2019 Yukon

Resistor or diode?



Edited by YOUNG57 on 07-18-22 02:13 PM. Reason for edit: No reason given.

 
YOUNG57 
Frequent Contributor
Posts: 1346

Loc: Tennessee
Reg: 12-06-10
08-22-22 07:45 AM - Post#2846239    
    In response to YOUNG57

Found answer to my question. Got to love YouTube….

On the brown plug in the BCM (under driver’s side dash), install a diode between the Brown with White Stripe wire in Pin #10 and in the Solid Blue wire in Pin #22. I used T-taps wire connectors on both wires and plugged in a diode between them. So, this reversible without damage.

The fog lights will come on with headlight low beams automatically in low light condition and stay on with high beams. This gives me a lot more illumination to both sides immediately in front of vehicle. They do not come on with the DLR lights or cancel with turn signals.

The only down side is this Yukon has automatic on and off high beam depending on light conditions and on-coming vehicles. With the diode in they are no longer automatic.




 
Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

431 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.091 seconds.   Total Queries: 17   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 12:33 AM
Top