I had the "Back Off" modulator for my '08 SERK and liked it a lot. I took it off when I traded my SERK for my '09 SERG.
A buddy of mine has an '09 SERG with the Wig Wag system and for me it's still a bit confusing when using a turn signal when braking.
In my case I purchased the chopped Tour-Pak and also the LED spoiler for the chopped Tour-Pak.
I used my Back Off modulator on the the LED spoiler only and kept the standard LED tail lights from HD functioning as stock.
This gets people's attention and still maintains full individual brake/turn LED functions.
Per the Back Off instructions, their system is 50 state legal as well as the headlight modulator I've installed on the SERG.
The Back Off has settings that allow for a flashing of 4 flashes and then a solid brake light for 4 seconds and then repeating the sequence over and over as long as you hold on the brake lights. It can also flash and then stay on solid until you let off and reapply the brakes.
I like my head light and tail light modulators a lot. My head light modulator gets a lot of attention and I've ridden behind police without any issues.
Good luck with your light options.
