I tried and EP34 to compare it to my superbright flasher - same result. EXCEPT in the course of doing so I realized that either of them will work if I take the single dash bulb out. I had only been trying by switching the turn signal indicator all the way to the left or right (where it stays by itself and activates the beeper). If I place it left or right in the 'sweet spot' first position, the signals work as they should. Again, this is with the single dash bulb out. So, I will get diodes and then I will be able to put my dash bulb back in and have full function of the signals. That's the plan anyway.