It was quite easy actually, easier than soldering cables to LED strips or making your own audio cables. Those require more tools and skill.
I should have reviewed soldering tutorials on YouTube first though instead of the marathon afterwards 
I am going to get some more soldering supplies in coming days, most of the soldering jobs is actually not difficult if you have a couple of tools and follow a couple of guidelines.
On the other hand, it’s extremely frustrating and pretty much impossible to do even a “pass” grade job intuitively without tools and knowledge.
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