Battery problems

[TGVFR400]

Hi I'm new to this forum and I am quite new to motorcycle mechanics. I have a 1191 nc30 and although it had held strong for a few years now I've begin to have some big problems.
All of these problems are originating from the battery. I have swapped the rectifier and plug (as it was melted on) after this I broke down.
The kind man from the AA who rescued me said my battery wasn't accepting any charge. As I had attached my new battery to a broken rectifier I figured that it was ruined so replaced it. All was well for about a week of short rides until eventually the bike cut out on me after a ten minute ride, and the starter button just forced a kind of buzzing sound from under the seat. I had to leave the bike that night but when I got back to it the following day it started no problem and rode home.
With my limited knowledge I've had a quick look over the bike for any obvious signs but I'm thinking maybe a bad electrical component somewhere is perhaps shorting the whole system. The wires from the ignition have kind of come away and look quite corroded. Could this affect the charge of the battery? I have already spent a lot of money o batteries and don't want to rewire anything that I don't have to! I have a small budget to sort these things out so normally try and do it myself. Would this kind of troubleshooting be best left to a professional?
Any help would be greatly appreciated !
Many thanks,
Tobi

[speedy231278]

You need to get the wiring sorted. Quire possibly, the old reg/rec that toasted it's plug and knackered the battery has also managed to cause this damage due to excessive output, although it can also be caused by corroded connectors which increase the resistance of the wiring and cause it to get really hot. The insulation on the bit you show above has melted and bare wires are likely to short. The short is probably killing the battery and if you flatten it too many times it's going to lose performance and will never charge properly.

You need to inspect all the wiring for damage like this and repair it (or have it repaired). Melted wire and charred connectors are both signs of and causes of serious issues. Also, make sure all the fuses in the fuse box are the right rating. Personally, I'd hope that the fuses would start to pop before the insulation melts like this, so perhaps another owner has had issues with this bike in the past and put bigger fuses in to make the issue go away. The worst case scenario of dodgy wiring is a fire, which of course is very bad news!