Soldered the wires? Or soldered the lights themselves? I'm trying to avoid soldering since I'm only good with heat shrink wire connectors.
Just soldered the wires, those heat shrink connections are fine too.
I also just drilled out the holes a bit more and bolted directly to the old running board mounts, you don’t get to aim to em this way but they are bright as heck and they are quite sturdy.