Pumpkin the robot
Guru
Invest in a good heat shrink crimp tool and some heat shrink crimps (white and red).
I used to solder and shrinkwrap repair these but now this would be my preferred method.
Just make sure you get proper shink crimp pliers (the plastic crimp pliers don't work properly even though some sell them with the heat shrink connectors).
Personal I'd chop the connectors off and hard wire the lot.
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I I invested in a decent set of crimpers last year, the R6 I had before this had a previous owner that must have had shares in halfords blue electrical connectors! The whole bike was a bit of a mine field, some people should just have their tools taken away from them!