2015 Sierra Denali diode dynamics switch backs

[lsone_chevelle]

Hey guys I have diode dynamic switch back boards in my denal headlights, however the guys that installed them did so in a manner that I lost my day time running lights. I had them do led signals that only light up when blinking(deletes them from always being lit). I want to delete the switch back feature of the diode boards and just run them white all the time and gain back day time running lights.

 

Anyone able to tell me where i should grab power from for full 12 volt daytime lights?

[lsone_chevelle]

No one?

[SmittyEisenhower]

Did you ever get this figured out? I'm in the process of installing these on my 2014 Sierra and am having the same issues. The white LEDs shine at night only when my headlights are on and the amber switchback functionality works perfect. But during the day the white LEDs do not shine as DRLs.

[Silvern Sentry]

I am confused, You do not want running lights? Is that even legal? Pretty sure they are DOT(FMVSS article 108) required. Amber lights are required to mark the outside dimensions of your vehicle, hence the term marker lamps. The only way this would be compliant would be if the DRL LED's were amber like in Dodge Ram.

 

I would not personally recommend this setup however to answer your question I have an SLE and wired up SLT style LED DRL's I tapped the #50 (o2 sensor) in the under hood fuse box, this is only hot when vehicle is running so works perfectly. I should say I used the relay harness from GEN5DIY but that is what it does along with killing my headlamp which is DRL by default.

 

I would like to ask a question in return: Was the goal of this switchback a way to solve the issue of hyperflashing (the truck thinking LED bulb was dead because of low voltage) ?

[Silvern Sentry]

OK so looked at these since I was on the diode dynamics site, does not effect you marker lamp anyway only changes the factory 'DRL' LED upper and lower boards, I had thought you meant a switchback 3157 bulb:

 

"These LED boards are a direct replacement for the factory ones, but have double the number of LEDs, in both white and amber. The white LEDs turn on as your parking lights and DRLs, with a dimmed power level at night. Anytime you hit your turn signal, the white shuts off, and they light up in bright amber to indicate signaling. Note that with this setup, both accent bars light up together at all times."

 

So it says that they make both bars act as your DRL as opposed to just the bottom one and when you turn on blinkers the white shuts off and they turn amber instead. However you said you had you had them delete everything except the LED turn signals. So did you not ask the people installing to kill your DRLS and now regret that because you have no DRLs now in Alberta? Am I understanding that correctly? Sounds to me like they just snipped the power wire to white LEDs on the board can they possibly just fix that and have them funciton the way DD designed them?

[SmittyEisenhower]

Thanks, I'm familiar with how they are supposed to work, they just weren't working that way for me. The white lights would not come on as DRLs unless I turned the knob to turn on my parking lights or at night. I ended up solving this problem. On the end of the switchback controller comes a pigtail of 4 wires to tap into the factory wiring. The wire colors were red, white, yellow, and black. Since this product was made for this truck, naturally I color matched the wires while tapping into my factory harness. Turns out that was wrong. I ended up busting out the instructions to find that it goes Red-Brown, Yellow-Yellow, White-Green, Black-black. So I had two wires tapped wrong. Got it all figured out now though. Got my headlights freshly painted black with tinted LED lenses. Very pleased with the outcome.