Good idea!If you have a multimeter, do a resistance check from the fuel pump wire to where ever it goes in the fuse box. If it has continuity move the wire around and observe the multimeter.
You mean that I should check the wire in parts, like for example every 20cm?
Check the whole wire first. Put one end on the fuel pump side and one end in the plug that you found burnt. Then wiggle the wire around in as much of the wire as you can get your hands on.
That burning pin is almost certainly a symptom and not a cause. Although I would be very worried at how hot that is getting. I would not drive this until this issue is fixed, as that wire is getting hot enough to potentially melt plastic and cause a fire. And the other end of that wire is almost in the fuel tank....
Im not driving this for many reasons.
First is that now its not reliable at all.
Second is that I discovered the heating wire problem, and I dont want bigger damage.
Third is that I am waiting a friend with a thermal camera for android! A unique invention!
Anyway, today I tried to clean the connection so I try later to see what is happening.
I discovered that the heat starts from the burned connection and "walks" through the wire. I believe that this is good in comparison to everything else that could be happening.
I was not worried about the hot wire in the fuel tank untl you mentioned it!