I also etched the resin on my flasher housings so I could mount the electronics I bought from http://fiberopticproducts.com/ . They were only $9.00 each and already put together! I then used a hot glue gun to glue the back of the board to the flasher housing.
I also order from the run of power distribution boards, run #3. These boards are used to step down voltage from 12 volt batteries. More on them later when I get mine.