LED brake light bulbs .

I'm running Sylvania Zevo which are plenty bright.
And this flasher.
2-Prong Electronic LED Turn Signal Flasher Relay EF32RLNP BIPOLAR
Bought 6 so far.
It just needs the extra ground.

What everyone should consider is that if you go LED flashers, I don't think your system will give you an indication of bulbs not working.
So do a frequent safety check.