Today I went and tested with a fellow forum member and as we were about to do our first run, we tested the LEDs. Using a Sony cybershot with nightshot, we fired a gun at the heads and none fired back. I ended up pulling out the interface box and saw that the wires had loosened. I had been driving around for about 2 weeks without any protection. At least once a week always check your LEDs to make sure they are firing ( most cell phone cameras will work in place of a cybershot). A couple of loose wires could've meant a very costly ticket!