I am about to buy a Back-off brake light modulator and discovered that Signal Dynamics makes a large number of lighting controllers.
http://www.signaldynamics.com/lighting_control.htm
I found a few things to note:
There are two version of the Back-off modulator. Only the XP version is made to work with Incandescent Lighting, LED Lighting or a combo of both! (MikealiasMike - this may be why your LED trailer lighting wasn't working so well when we installed the non-XP back-Off module on your bike.)
The have a module to help with fast flashing LED lights.
For those that want to get real fancy they have Wig-Wag module and a self-canceling turn signal module for those that do not have this feature.I was surprised to see just how many options they offer for improving motorcycle lighting.