Originally Posted by JamesM
I really like your idea of mounting them to the topcase.
I installed them last night. Wow, these things are really a snap to put on... just 2 screws to remove the tail lights to get at the wires and there's plenty of room to route the new wires and tuck the control box back by the brake lights. The crimp on connectors they provide are really nice. Connecting them to the accessory power instead of the parking light as I wrote above worked out fine, the fact that they stay on for a minute or two after I turn off the bike is actually kind of nice.
I've got to say I'm very impressed with the kit. I got the set with the built in volt meter (I'm a gadget junkie) and it just works: 12.4 volts last night. I played around with reprogramming the modes -- so easy! Just pull the brake lever a certain number of times within 5 seconds of turning the key. I tried the pulse/flicker running lights both ways and decided to leave the flicker turned on -- it's a very subtle fast pulse that catches your eye from the side but when you look right at the light it appears nearly solid. Hopefully it'll help other drivers notice me, it's a neat idea.
After careful consideration I finally decided to just mount them next to the license plate frame. I came very close to making a bracket to put them right under the luggage rack, but I rode with another GT over the weekend and looked carefully at his taillight while behind him and I think that putting the extra lights there would partially block the built in brake light, which isn't something I wanted to do.
I also carefully considered putting them directly behind the luggage rack, but I think this would be too obtrusive when the topcase wasn't on.
My topcase (50l) sticks out past the luggage rack by a good distance, so putting the lights close to the rack would mean they're blocked from view by the case. I'm still toying with the idea of putting them right under the very back edge of the topcase, using dual lock to hold them in place. If I do this I'll also modify the license plate brackets with some dual lock as well, and just put them down by the plate when the topcase isn't on the bike. It'll mean a little more work when putting the case on, but I usually leave it on the bike when I'm doing a long trip so no big deal.
Anyway, big thumbs up on the P3+ lights and the design. There are more LEDs (12 per side) than on any other tail light option I've seen, they're really bright, installation is a snap, and the programming features are very cool.