Negative Cable Burning Up.

jrichker said:

If the small ground wire is overheating, it means the large ground wire isn't doing its job correctly. The engine block ground for the starter is low enough to the ground to pick up lots of oil, dirt and moisture and start corroding.. Once it starts, it just gets worse, since corrosion is an electro-chemical process. The voltage drop across a bad connection increases the electro-chemical reaction and causes more corrosion. It's a vicious circle that grows worse with time and use.

All the ground connections need to be made to bare metal and clean bright shiny metal is the best surface for a ground.

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