Not a job you can youtube as electrics is too risky. What you have done is remarkable and understand the long hours involved but should be worth the effort and sacrifice. I need to do the windows by replacing all the putty or replace the entire windows and upgrade to aluminum. If I was staying I would go for the latter, but for now putty will have to suffice.
There are probably some DIYs for them, but far too risky for me. If moving - just do the putty :)
Putty it is lol. I will try most thing in DIY, but plumbing and electrics I would be dangerous.