[FerociousNINJA]

I haven't installed the electrical yet but this is what I read:

"You’ll need to get a new 2 pole electronic flasher relay from any auto parts store. They’re about $4 or so at Autozone. You need the new relay because the undertail comes with LED turn signals. The LEDs don’t draw enough power to operate the stock mechanical relay so they won’t work without the electronic relay."

HBR FAQ
-Do Hotbodies Racing's LED flush mount blinkers work with my stock running lights?
No, our turn signals only have two wires. One for the ground and one for the turn signals, the extra wires from your wiring harness are for the running lights and this should be tied off to the side because it is not used.

-Do I need resistors or load equalizers?
We actually designed the LED's to blink faster, since they are smaller than stock, so they will draw more attention from drivers behind you. If you wish to slow them down, we recommend a 20-25 watt 8 ohm non-inductive resistor wired inline with the RED wires on our kits. You can check with Radio Shack or www.customled.com for pricing and availability.

http://www.hotbodiesracing.com/en/fa...kers_questions