Best way to splice multiple wires

[paintman]

Hey guys! I'm working on my tail lights and I have 5 wires I need to splice together. One wire is the lead from the switch. The others go to my upper and lower tail lights on each side of the truck (I have lights in the bed rail), and one wire to the license plate light. What would be the best way to connect these together?

Strip them all back, twist and solder them together and heat shrink them?
One large wire nut?
Some kind of terminal block? Concerned about it getting wet.