I used the
LED Guide in the FAQ to convert my my turn signals and tail light to LED's. My rough calculations show a 14 watt gain (6.7 versus 5.6 amps), and my charging system no longer has problems with my halogen headlight and my 3 ohm coils.

I got my turn signals and brake light from
Custom Dynamics as in the FAQ. I used pigtail bases for the turn signals, and I mounted them using the
Installation Tips on the Custom Dynamics site. I used
Great Stuff foam crack filler (about $5 and brought to you by Phil McCracken Industries, Inc.) to mount the LED lights into the turn signal buckets. To hold/clamp the LED's I set the LED light in the bucket, put a cross of "gaffer's" tape over the top, and then pulled the LED up so that the top of the LED cluster stuck to the tape. That way, the LED ended flush and level with the bucket opening after the foam expanded and hardened. I secured the tape well because the foam expands out as it dries overnight. It was a pain to do a neat job with the foam; however, dried foam can be cut out with a razor knife.
I replaced the stock flasher unit with an electronic one. See this post from Bodi about
Electronic Flasher Units for LED's. The cool thing is that Honda included an unused ground wire for the flasher unit -- electronic units have to be grounded.
After I got everything installed, the signal beeper wouldn't work, and the turn signals wouldn't flash when the switch was pushed all the way over (where it would normally beep). I disconnected the beeper connecter in the headlamp bucket rats' nest, and now the signals work fine, except that they flash very quickly. Some flasher units do this as a failure mode when the unit does not detect a load. I like the fast flashing, especially for when I'm passing, so I'm not going to get a different flasher unit. As for the beeper, I kind of liked it, but I can live without.
Additionally, I picked up some small LED's for the speedo and tach. I got some standard and wide angle bulbs from superbrightleds.com; however, neither would light the gauges enough for me, so I put the incandescents back in. Of the two (standard and wide angle), the standard were slightly brighter in the speedo/tach.
[Modified 2 Nov.: Added notes about flasher unit]