Even that is a reason, is not necesarilly the number 1 or the only one. Those wires/terminals at bulkhead overheat even being new since packard terminals are not able to handle the load going through when alt provides max output at increased rpms once the batt got drained while engine is iddling. If you correct the power capacity coming from alt side at idle you are 70-75% safer than with the stock capacity alt even with the stock wires and terminals