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 - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that�s wha
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