I'm planning a few electrical additions to my Gold, but this is bothering me. Ideally I'd replace the entire wiring loom, if I could afford the time and money to do so, and if new ready made looms are available (something I haven't yet investigated). What's happened is that the wiring has turned dark brown and matte finish, I pressume it's oxidation...
So, is there any treatment available for old wiring to make it possible for solder to "stick" again?