I talked to iJDMToy and they showed me the product we should be using for the turn signals: 18 SMD 7440 7443 LED Bulbs | Turn Signal Lights, Back Up Lights, Tail Lights
If you want LED turn signals in the back, USE THESE! Do NOT use the ones in the original post! (Maybe we can get an admin to update the post, since Kreaper seems to no longer be on the forum?)
These are the same thing as the LEDs I bought for turn signals, except the connector is different. iJDMToy says that there will probably be a new version sometime in the future that will be much brighter. I still have not yet decided whether to give them a try.. the reason being that if the LEDs are wired differently they may give out a different brightness. When I was playing with my LEDs I found that plugging them in one way vs. the other would still give light output, but one way was brighter than the other. Perhaps my LEDs are only operating at half brightness.