Hiya Red
Been a few years now since I have been on here.
I had exactly the same issue with the large white multi connector under the tank of my FZS600.
Green death on some of the internal pins and sockets and black burning on others, I photographed the plug from all angles and make written notes of the wires
(Probably not necessary as colour coding helps) I cut the plug right out and used new wire to make 'Link Wires' and spent some time soldering the Links in, Prior to this I purchased a box of different coloured heat shrink tubing, the finished job is far superior to the white multi connector.
You say that you will fit a new connector when you have time, If you have soldered them well I would leave it as it is, and, should you ever need to separate the loom at that point that would be the time to fit a new Multi if that's the way you want to go.
soldered joints don't seem to suffer with the dreaded Green Verdigris/Oxidisation, provided you do not use an acid flux (plumbing type flux).
So pleased to read you have sorted out the problem, I have been following the post with great interest.
tommyardin