Originally Posted by Blade

All credit goes to all those here on the Forum before me...

But if I recall correctly, I used a simple 9v battery to test the leads prior to installation to correctly mark which was POS & NEG. You've probably just got them switched around.

Also, the LED parking lights will install 2 different ways, but they also have only one correct fitment. If they don't light, then rotate the bulb 180* and re-install.

Originally Posted by ZForce

Oh....btw...here is a link to my thread with all the part numbers and vendors to purchase ALL of your LED needs.

LED Strip & LED Turn Signals, Parking, Reverse, Map Dome, License Plate & Trunk