electrical - Fuse box above battery melting - Motor The fuse that has melted in your unit is S177 which is wired to the alternator. Apparently as the cable which goes from this fuse to the alternator gets old it begins to As I understand it, there was a fundamental redesign in the cars from around 2002 onwards. Unfortunately that doesn't help you but I wonder if it..Best answer · 12I had to deal with this problem some years ago on a VW. What I noticed is that the fusible link ran slack, causing the connection to arc and as a r..7Replace the wire between the alternator and the fuse box. It's called the alternator harness , but I haven't found it for sale online. It is ju..6I have a 2005 Golf MKIV and it did this also. Lost a/c, fans, overheated. The B+ wire from the alternator to the battery appears to be too small a..3An overheated electrical connection has but one cause, resistance to electron flow. Find the cause of this and fix it. The test for this is volta..2The B+ wire is likely alright if you noticed it on time, but the problem is due to the drained battery and the bad connection around the fuse. If i..0Replace the box. Get a 49" #4 battery cable from parts supply house. The wire will have eyelets on each end. Use one eyelet and remove the other..