Easy increase in visibility
Other than removing all of the body panels necessary to get to the connectors, this could not be easier. Unplug the taillight connectors, plug in the modulator between them and put everything back together. I planned ahead and also added a trunk brake/turnsignal whie I at it, because the same panels have to come off to do that. I immediately noticed other vehicles stopping sooner and giving me more space at traffic signals. In my opinion, these are "must" modifications to your Spyder.

Brake flasher
Easy plug and play installation. Highly recommended.

brake light flasher
i was hoping for an easy fix and it was.

Brake light modulator
Works just as described.

Have not had it professionally installed yet!