I too am surprised that Dodge didn't use LED's in the hatch light. I does seem quite odd that they forgot this. I bought 2 each of the 4211x6 festoons in warm white and cool white, as well as 2 0f the WLEDx5 wide angle LED's in cool white for the license plate lights. 4211 festoons are definitely the correct size to use. However, don't wast your money on the warm white festoons. They are practically the same color as the incandescents that come with the Journey. The cool whites are a close match to the other interior LED's. I can hardly notice the difference. I must echo Thunder. This is a truely great mod....an sooo easy. It's about a 5 minute operation to change both the hatch and license plate bulbs. WTG radon!
Quick revision.
I should have waited until dark to write the above. The cool whites are definitely a little bluer, but they are a closer match to the LED's that come with the Journey than the warm whites are. Like I said before, the warm whites look almost like the incandescents and are quite yellow. I my opinion, a little bluer looks much better than alot yellower. Plus a little bluer looks kind of cool. Also, the cool whites on the license plate...very cool.