AngelDeath

Greets all,

I had a question and to see if anyone can help me along. I am trying to find out a few things, and doing a search on google isnt getting me much info, probably because the 15-16 stangs are new.

I am particularly interested in knowing what controls the fog lights going off when you signal? Is this a computer controlled setting, or a relay module setting?

Thanks for any help you can give and shed some light.

jz78817

the lights are controlled by the Body Control Module (BCM.) this behavior is programmed into the BCM firmware and can't be changed easily.

The reason the car does this is because it's legally required to. FMVSS 108 says that if the turn signal indicator is "optically combined" with a front running light, then the running light must turn off while the turn signal is activated so other drivers can see the turn signal clearly. the only exceptions are the headlamps if they're on low- or high-beam.

AngelDeath

I understand that it is a required setting, I wanted to find out if it was difficult to change, DRL's as with most cars I know must shut off, but being that this is a fog light it shouldn't fall into that requirement. Also I am planning to change the location of the signal light to the DRL fins next to the headlight by diode dynamics, at which time should eliminate the requirement for the fog light to turn off if I can have the light there stay as a DRL and not act as a signal.

AngelDeath

Does anyone know the as-built line code to change the fog light from shutting off? PM me if you want. As I said doing modifications so the signal light will no longer be in its original location and will be visibly seen without distraction.

AngelDeath

If anyone is interested in shutting the interior lights off so they dont turn on when you open the door, or shut the car off, here is the 'AS-Built"code:

Note: This includes the puddle lights.

Your welcome

mustangdaddy

ive been looking at the Diode Dynamics switchback boards for the DRLs.

I will wait until I get the halos to do them doth at the same time

AngelDeath

Its easier then you think, I've already found it and changed it, along with quite a few other things.

In case anyone is interested:

Simultaneous High Beams & Fog Lights Disabled BCM 0726-27-01 0100 0001 0057
Simultaneous High Beams & Fog Lights Enabled BCM 0726-27-01 0100 0000 0056
Simultaneous Fog Lights & Turn Signal Disabled BCM 0726-28-02 0000 0100 0159
Simultaneous Fog Lights & Turn Signal Enabled BCM 0726-28-02 0000 0000 0158
Police Dark Mode Disabled BCM 0726-32-01 0A01 0000 006B
Police Dark Mode Enabled BCM 0726-32-01 0A01 0100 006C
Double Honk Reminder (Engine On, No Keyfob) Disabled BCM 0726-41-02 0000 0001 0071
Double Honk Reminder (Engine On, No Keyfob) Enabled BCM 0726-41-02 0001 0001 0072

And all it takes is 1 free program, and $80 for the right OBDII scanner.

AngelDeath

I'm not much into the Halo's, I had them once in my previous car, I'm over that, but the LED boards are now my main objective, but I have to call DD and see if I can use them solely has signal lights and how to wire them so the white does not light up, since I am changing the whole lighting wiring between the actual signal lights and the LED's along with the Fog lights.

Right now I have my fog lights working as DRL's along with the LED's, but that will be changed, to only the signal lights being used only as my DRLs with my Fogs and the LEDs only being signal lights.