DRL to LED Conversion- Won't light up???

[WildernessJeep]

I have replaced almost all the incancescnet bulbs on my 2005 Yukon Denali with LED's from superbrightleds.com. I put cool white replacement 3157's in the DRL spot, but they won't come on. Opinions?

At first I thought I just had the bulbs in backwards (LED's matter), but they still won't light. I can literally take the LED out, put an incandescent in and the old style lights up. Opinions?

 

[sumo]

Not sure about nbs but in my nnbs in order for drl to come on, has to be in drive for drl to come on. If I was to put the ebrake on, drl would also cancel

 

[kwOH]

As @sumo said check them in drive and if nothing, then may be the plugs, when i replaced mine the plugs were stiff from being so hot over the years and almost kinda melted, with the regular bulb in it would work but it was not making a good connection on the LEDs.


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[nharkey85]

A lot of led bulbs also specify not for use in DRL applications. Have you bench tested the bulbs to verify the light at all

 

[cmc76]

with LED, polarity also matters. May be as simple as taking out the bulbs, flipping them and putting back in.