Purchased a Red LED Tailight array for my bike from Custom Dynamics (talk to Christine...she's a sweetie) to install in place of the regular 1157 clear bulb.
The install requires that you remove the lens, heat the epoxy like substance sealing the chrome reflector into the lens, and remove it. It's a bit aggravating to do, but if you heat it up and use a very small screwdriver it will come out. Took about 20 minutes to get the thing out of the lens. You then stick (the LED array has the sticky tape on it) the part on the chrome reflector. It basically sticks on the four corners....sorry, no pics of that part of the process. I then reinserted the chrome reflector and sealed it in place with black silicone and let it set up overnight. The connector for the LED is a plug and play, so no issues there. I also have amber arrays coming for the turn signals. The main reason I did this was to get a brighter light down low, since I already have the LED strip on the tourpak, and the 1157 was pretty dull in comparison. I am not going to do the turn signals in red run/stop/turn, as in my opinion from a distance at night, with the bullet turn signal bar on the back of our bikes making the signals so close together, it all looks like a red blob, and is difficult to distinguish the turn signal if on because it is no longer amber. Amber is a more visible color from some of the safety articles I've read, so I'm just going with a plug and play amber LED array for each side and keep my smoked lenses.
The LED tailight array has three whites on the back top, which shine through the clear part of the lens...they have a bit of blueish tint to them that is hard to see in the pics, but it looks pretty cool, IMO.
First pic is the old tailight in run position...