Last Friday 2016-06-02 I was greeted with a flickering passenger side fog light. Like many others here, I had purchased my OPT-7 Fog Light bulbs around November - December 2015 and installed them. so they've been in my car for about 6 months, through the VERY MILD Chicago winter.
I contacted OPT-7 who instructed me to do a SWAP TEST.
Thank you for choosing OPT7! I apologize for the delayed reply. We are currently working through a high volume of messages and I was just able to get to yours now.
Sorry to hear about the one bulb not performing as expected. In cases like this I can simply replace the component that is not working correctly with a brand new part.
All we need to do is identify what part needs to be replaced using a simply test called the "SWAP TEST"
Basically, remove both LED bulbs for their respective drivers. Then swap them and connect them to the opposite driver. Note whether to issue you experienced before has moved or remains on the same side.
Start by disconnection each LED bulb from it' respective driver Swap them to the opposite side's LED driver If the issue moves with the LED bulb then the LED BULB needs to be replaced If the issue stays on the same side proceed to swap the LED driver If the issues moves with the LED driver then the LED driver needs to be replaced If the issue stays on the same side proceed to swap the capacitor (If installed) If the issue moves with the capacitor then the capacitor needs to be replaced If the issue stays on the same side proceed to swap the Plug and Play wire (PP Wire) If the issue moves with the PP Wire then the PP wire needs to be replaced
Let us know the results and we will get that part shipped out ASAP, thank you!
I have included the results of MY investigation. My advice, for those living in the snow belt, is to check your bulbs. See below why.