It's not original, but it's a good idea to put a fusible link between the battery cable terminal at the starter and the wire going from there to the ammeter. It's a short piece of fuse wire that melts in case of a heavy current short circuit. They're available in the "Help" section at most local parts stores.

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Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!