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Problems after changing to newer LED turn/brake lights

harrykon

Member
Joined
November 15, 2007
Messages
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City, State
Michigan
Year, Model & Trim Level
2001 Sport Trac 4x4
I'm baffled. I have a 2001 J1 ST. I have GP Thunder LED 3157 bulbs on all four corners. My left rear bulb burned out so I ordered some new GP Thunder 82 SMD 3157 bulbs. I have an electronic blinker module installed from before to cure the hyper flashing issue. I do not have any resistors installed anywhere, since my old set up was working well.

The new LEDs installed easily and were working fine, seemingly...

However, I happened to move my truck in my driveway at night with my lights off, and MY FOG LIGHTS TURNED ON when I TOUCHED THE BRAKE PEDALS!!!

I have a 2001 ST, so I have the typical fog light set up with a switch on the dash, which I leave on so when I turn on my lights, the fogs light up. Now with my lights OFF, the fog light and indicator light on fog switch light up when I touch the brakes.. I also get a buzzing in a relay somewhere in the dash and clicking..

I went back to some old incandescent 3157 until I figure out what's going on; don't want to damage anything electrical.

Anyone out there with any thoughts or experience with this????
 






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