Bill........while there is an obscure advantage to positive (+) ground, negative ground (-) came about because of 12-volt ALTERNATORS. The alternator is an ALTERNATING CURRENT device that needs to be changed to DIRECT CURRENT by 1-way valves called DIODES to charge a BATTERY. The outer case of the diode is NEGATIVE but needs a HEAT SINK to keeper COOL so the silicon doesn't melt. The case of the alternator acts as an HEAT SINK. While you kenn "insulate" the alternator case from the engine block that is generally a non-starter 'cuz its EXPENSIVE. Wanna blow yer mind? Consider the FIBERGLASS CORVETTE. Bottom line, "earth" (or ground) kenn be positive (+) and negative (-) at the same time. Ain't electrons funny???........electrical Dell, FCC 1st Class License and retired Boeing Flt Test Engr
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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