I have been re pining all the connectors and have come across some greeny bluey gunk in some of the connectors that I can only assume is corrosion from the battery leak that it no doubt had at some stage. This is ok  to clean up while re pinning but at least one of the wires seems to have it a fair way through it. I have traced it to one of the bonus lights and it doesn't appear at the other end but I am thinking I might as well replace the whole wire. Here is a pic of a connector with the greeny gunk. What are your thoughts / experiences in this situation.

Cheers: Brettski... :)