Here is a guide for the easy and reliable replacement of worn out, corroded, and melted automotive connectors. They are replaced with heaver-duty higher performance IP67 sealed connectors.
Determine if you really need to rework your electrical system. I have had this problem on all of my ZX7r motorcycles, and have repaired them all. The main problem is the machine not starting because these connections supply power to the rest of the motorcycle.
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Step 2
Pull apart the existing ignition connectors and remove terminals from their housing if possible. Otherwise, clip wires as close to the housing as possible.