Today, whilst out and about my bike stopped several times burning number 6 fuse every time. So after running out of fuses and wiggling the fuel pump cable around I had no other option, but to take the tank apart on the side of the road and address this nagging issue. Fortunately there was barely any fuel in there, so I managed to stay relatively smell-free. Turns out PO had soldered a new positive wire to the old one, used heat shrinking tube to shield the hot wire and clamped it to the body of the fuel sender unit. Surely enough heat shrinking tube was not made to be used in petrol, so it all broke up by now making an intermittent contact with earth, burning fuses, but not the bike itself, thank God. So I had to do with what I had, shielded the barren soldered cable with the contact cap from the fuel pump, and clamped the negative cable and the end of the contact cup to the fuel sender, making sure the positive wire is not touching ANYTHING there. It is working since perfectly, but a note to myself, McGyver solutions are OK on the side of the road, but they need to be corrected, once near some proper tools and consumables.