Quote:

I don't know why, but I was able to leave all factory wires
intact and use no additional inline components by using a
flasher made for LEDs.



Even with LEDs both front and back?

I have LEDs both front and back and the LED flasher (same one as you posted), and my turn signals ended up flashing like hazard light. I just puled the indicator bulb from the dash, and it's fine.

Soren