Yeah, I went through this too with my '66 Barracuda. When they sell you the $%^& LED bulbs for $10 each, they DON'T tell you that they won't work as a turn signal unless you splice a gizmo for each LED bulb in your wiring. The gizmos cost another $10 or so each. I was hoping to have brake lights that were brighter & not inclined to melt my lenses. Instead I'm $20 poorer & back where I started - hopefully a little wiser, too!