Adding DRL’s with AlfaOBD

[1500ram12]

Wrong... my parks still turn white with my fogs set as the drls ....this is actually very strange now because I can not duplicate it on my buddies 2017....

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Odd. So with the headlight switch set to auto, truck in drive both your fogs and parking lights come on?


2018 2500 6.4L Hemi Tradesman

 

[CheechDogg.0n37s]

Odd. So with the headlight switch set to auto, truck in drive both your fogs and parking lights come on?


2018 2500 6.4L Hemi Tradesman

Yeah dude .... im scratching my head now because my buddy got me the switchbacks because I ser him up so he could have leds on his headlights and all around actually but they don't work like on mine...lol

I am going to take a look at all the led and hid settings to see if anything is different... im really tripping out now

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[1500ram12]

Yeah dude .... im scratching my head now because my buddy got me the switchbacks because I ser him up so he could have leds on his headlights and all around actually but they don't work like on mine...lol

I am going to take a look at all the led and hid settings to see if anything is different... im really tripping out now

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Hmm interesting. Either you had a glitch in the programming (check your data log and look for drl location) or (if you bought the truck used) that the previous owner did some creative wiring


2018 2500 6.4L Hemi Tradesman

 

[mtnrider]

This is getting way too confusing now Lol

I have LEDs everywhere on mine and switchbacks for the blinker/park bulbs (yellow for blinker white for park)

Now I can set the blinkers as DRL in Alfa and will have yellow blinkers on for DRL's (being the yellow side of the switchback bulb)
Park lights (the white side of the switchbacks) is not a option in Alfa for DRL's so that can't be set.
I can also set fogs, low, and high beams as DRL's and they work as they should (still no park lights with any of those which I wouldn't expect them to be on)

Now if I turn my headlights "on" for any reason I get the white park lights from the switchbacks which is to be expected and how the truck normally works (stock truck would be yellow parks with headlights on)

What I don't understand is why cheechdogs headlights are on during the day (referencing his video) when he has the fogs set as DRL's? And this is why his parks would be on at the same time I believe, because the headlights are on.


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[1500ram12]

This is getting way too confusing now Lol

I have LEDs everywhere on mine and switchbacks for the blinker/park bulbs (yellow for blinker white for park)

Now I can set the blinkers as DRL in Alfa and will have yellow blinkers on for DRL's (being the yellow side of the switchback bulb)
Park lights (the white side of the switchbacks) is not a option in Alfa for DRL's so that can't be set.
I can also set fogs, low, and high beams as DRL's and they work as they should (still no park lights with any of those which I wouldn't expect them to be on)

Now if I turn my headlights "on" for any reason I get the white park lights from the switchbacks which is to be expected and how the truck normally works (stock truck would be yellow parks with headlights on)

What I don't understand is why cheechdogs headlights are on during the day (referencing his video) when he has the fogs set as DRL's? And this is why his parks would be on at the same time I believe, because the headlights are on.


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I'm 99% sure that when I had my quads in and had turns set to drl's that with the lasfit led switchbacks they lit up white. I remember wishing they were brighter. I know I only ran them as drl's for a short time then went to high beam. They functioned just as they should with the lights on.

So something is definitely going on with his truck. The video the all his lights were on, so either it was just dark enough for the auto lights to be on or they were turned on to show that the parking lights are white while on, and it got twisted to that being drl's or their is a wiring issue


2018 2500 6.4L Hemi Tradesman

 

[CheechDogg.0n37s]

Hmm interesting. Either you had a glitch in the programming (check your data log and look for drl location) or (if you bought the truck used) that the previous owner did some creative wiring


2018 2500 6.4L Hemi Tradesman

I bought the truck brand new ... no error codes at all .... im stumped Bro lol ..

 

[CheechDogg.0n37s]

I'm 99% sure that when I had my quads in and had turns set to drl's that with the lasfit led switchbacks they lit up white. I remember wishing they were brighter. I know I only ran them as drl's for a short time then went to high beam. They functioned just as they should with the lights on.

So something is definitely going on with his truck. The video the all his lights were on, so either it was just dark enough for the auto lights to be on or they were turned on to show that the parking lights are white while on, and it got twisted to that being drl's or their is a wiring issue


2018 2500 6.4L Hemi Tradesman

Here is the thing ram12 ... even with just the drls set for parking lights they stay white during the day ...

I will look into this more tomorrow after I get out of work ... my buddy is coming over again so we can figure this **** out because he is bummed out his doesn't do what mine does ... im seriously stumped ...

 

[CheechDogg.0n37s]

And to clarify, the actual switchbacks are on now and not the all white 3157s ....

 

[BJSwizzle]

Thanks crash68, that worked like a charm! I now have factory LED DRL’s.


View attachment 201677

Your headlights were as DRL’s from factory?

 

[Jimmy07]

Here is the thing ram12 ... even with just the drls set for parking lights they stay white during the day ...

I will look into this more tomorrow after I get out of work ... my buddy is coming over again so we can figure this **** out because he is bummed out his doesn't do what mine does ... im seriously stumped ...

Just to take any variables off the table (ambient light triggering headlights when in auto mode), what is the behavior of your lights when you have the headlight switch in the off position, and DRLs turned on in your radio settings- while in gear with the parking brake off?
Edit to add: and the fog lights off also.

 

[CheechDogg.0n37s]

Just to take any variables off the table (ambient light triggering headlights when in auto mode), what is the behavior of your lights when you have the headlight switch in the off position, and DRLs turned on in your radio settings- while in gear with the parking brake off?
Edit to add: and the fog lights off also.

I will let you know tomorrow or Sunday when I get home from work ...

 

[mtnrider]

Ok, I went ahead and hard wired my switchback parks to the dedicated DRL line and enabled it. This is the goal I was trying to reach for mine. I'll do a write up later on where I tapped in and put diodes etc. but this is how I was wanting them to work.

https://www.instagram.com/p/B_sPMKdpIm_/?utm_source=ig_web_button_share_sheet

 

[CheechDogg.0n37s]

Ok qan update on what I just found out... my parking breaks go on together with the drls and lows because my windshield is tinted.... that is the only thing we can think of since my buddies truck doesn't do the same thing with the exact set up on his...

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[1500ram12]

Ok qan update on what I just found out... my parking breaks go on together with the drls and lows because my windshield is tinted.... that is the only thing we can think of since my buddies truck doesn't do the same thing with the exact set up on his...

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I guess if it's tinted enough that would trick the sensor into thinking it's dark out to turn the lights on. So technically you aren't using your drl's.

I guess you can change the sensitivity of the sensor through alfaobd. I'd give that a shot to see if your drl's will come on

I believe it's CBC Extern.Light- Auto headlamp on threshold

I'd check your log before changing it. You have to enter a number in and I don't know what the factory value is set at


2018 2500 6.4L Hemi Tradesman

 

[CheechDogg.0n37s]

I guess if it's tinted enough that would trick the sensor into thinking it's dark out to turn the lights on. So technically you aren't using your drl's.

I guess you can change the sensitivity of the sensor through alfaobd. I'd give that a shot to see if your drl's will come on

I believe it's CBC Extern.Light- Auto headlamp on threshold

I'd check your log before changing it. You have to enter a number in and I don't know what the factory value is set at


2018 2500 6.4L Hemi Tradesman

No ... my drls do work ... i checked by setting my highs as drls and it worked... so i have now used every configuration possible for drls and it works.... lows... highs...parking and fogs...



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[clifford15]

I agree with 1500RAM12. The tint is messing with the sensor so you will have to tweak the settings with AlfaOBD. But there may be a chance that it too will not be enough. Just for fun try to shine a bright light directly on the sensor to see what happens.

 

[mtnrider]

Forgot to upload this but here is how I wired in my Park lights to run off the dedicated line using my switchback bulbs. I spliced jumper wires from the dedicated line over to the park line and added diodes for protection. The connector I made the splice at is connector under the fuse box, that was the easiest place to get to the wires.
Then enabled the dedicated line in Alfa

 

[1500ram12]

I'm not disagreeing whether or not your drl's technically work. But if your windshield tint is tricking the auto headlight sensor in thinking it's darker than what it is then it'll override the drl's and turn your lights on. If you turn the headlight switch to off and all your lights come on when you engage drive then it's definitely an oddity in programming.


2018 2500 6.4L Hemi Tradesman

 

[clifford15]

1500ram12, i think earlier in the thread he mentioned turning the headlight switch to off which allowed the DRLs to operate properly.

 

[1500ram12]

1500ram12, i think earlier in the thread he mentioned turning the headlight switch to off which allowed the DRLs to operate properly.

I thought he did but figured I'd reiterate it just in case


2018 2500 6.4L Hemi Tradesman