Bad grounds and shorts will affect both the alternator & battery, they are paralleled all the time, and are not electrically isolated from one another. How is it the battery is surviving these alternator failures? The PCM pulses field current to the alternator as neccessary (for generator output) to mainatain electrical system voltage & put amp/hrs back into the battery. Could it be that there'* a glitch in the PCM keeping the alternator in conduction all the time with maximum charging current? Melting plastic is caused by high heat, high current. Or there'* nothing wrong electrically & it is the rear bearing, but 15 alternators?
2003 SSEi, Light Bronzemist Metallic - All Stock For Now
IBEW Local 261 Groton, CT
My other vehicle is a nuclear submarine.