[sweeneyp]

i read that one thread where few of the guys bought the non OEM ones and said they were dim looking in the daytime.

That was the cheap ebay "DRL's". A product from Phillips will be done proper. DRL takes quite a bit of power, my led DRL/fog modules from Osram (OE supplier) run 12W each assmebly just for DRL, for comparison, the fogs circuit built in only use 8W each assembly. My point is, unless its pulling around that much power for LED assemblies, it's not going to be bright enough for daytime use.

 

[tjsynkral]

Alright....

All of this can be done inside the car, under the driver lower dash @ the ECU.

Hi there, I am a bit confused by this diagram and I hope someone can help me understand what's happening here. (I'm good with electronics but do not work on cars a lot.)


For reference, I have the '15 XLE so the fog lamps are already there, I just want to bypass the ECU and run them whenever ignition is on, with a switch to restore factory control of them if I want them off.



As I understand it (I don't have any wiring diagrams for my car and can't find them online) - the "headlight/fog integrated power module" already contains a relay for the fogs. So, why wouldn't we just feed 12v through a fuse and directly into the gray wire with our switch? (Obviously, disconnecting the ECU so it is not pulled high on pin 25.)


I don't see any reason to ground or open the factory stalk switch when I'm bypassing, since the ECU won't honor our request anyway... right? What am I missing?

 

[Toyotaguy07]

@tjsynkral - Did you ever attempt what you wrote here? I have a '14 Highlander Limited I'd like to have any time fog lights on, too.

 

[Phil Indeblanc]

I had to install my LED fogs, so they simply have a ON/Off switch I put on the left side dash panel with the empty spots.
I didnt want them on automatically.

 

[Jaspher]

Is there a way for the toyota dealer to allow the fogs to turn on with the park lights? I have a 2017 XLE hybrid and don’t want the low beams on when really foggy. I just installed the Diode Dynamics SS3 SAE Fog Pro.