Drivers side battery positive cable getting very hot. Need help fast

[adamcook7_3]

Took cables off my drivers side battery on my 02 7.3 to clean the corrosion off. I reconnected the terminals and the positive wire got very hot and started burning the rubber. I don't think this is normal. I need help fast I need my vehicle working

 

[79jasper]

Only thing I could think of is you put them on backwards. Lol

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[superpsd]

Did you clean the clamps as well. I mean really clean them until they are shiny again. If they look dark they are oxidized and you need to clean the oxide layer off to improve continuity. Poor electrical connections cause wires to overheat. If you have a multimeter you can also check continuity. It is also best to coat the clamps and terminals to prevent oxidization.

 

[bruce]

excess resistance causes heat, do a voltage drop on the cable