I see so many get all CORNFUSED about Pos Ground, but stop n think for a moment !! As far as the battery and the load device (coil, lights etc) THERES NO DIFFERENCE.
IT DOESNT MATTER ELECTRICALLY (not withstanding alternators that MUST use the iron as the - battery connection as their case/frame is one of their conduction points) WHICH ONE OR THE OTHER BATTERY POST JUST HAPPENS TO BE TIED TO A HUGE HUNK OF RUSTY OLD IRON!!!!!!!!!!!!!!!
The iron is simply used as the current carrying conductor instead of having to run 2 wires everywhere, use the hunk of iron as the wire instead.
For example, if a coil is CORRECTLY wired to a tractor that happens to have the hunk of iron tied to the battery POS post (called Pos Ground) the coils - gets to the UNGROUNDED battery - post (via wire and ign switch),,,,,,,,,,and the coils other + post gets eventually connected to the batterys + post via the points when closed and distributors atatchment to frame (which is tied to + on battery) NOWWWWWWWWWWWWWW on a Neg ground tractor GUESS WHAT!!!!!!!!! The coils - gets to the battery - via closed points and distributor frame ground while the coils + gets tied to the ungrounded battery + via the ignition switch ITS THE SAME GUYS, THE COIL - TO BATTERY - AND COILS + TO BATTERY + REGARDLESS WHICH BATETRY POST IS TIED TO TEH HUGE HUNK OF IRON !!!!!!!!!!!!!!!!!!!!!!!
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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