I wasn't looking for through hole or SMT specifically. I'm sure there are some. If the SMT package has little legs you can still solder directly to it.
With so few components it should be no problem to just encase it in shrink tube.
I've got to put together an order. I need other stuff too. I intend to rework all the cables.
I want to make it so there's one connector to plug into the car. Having a bunch of separate connectors is a pain and looks messy.