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| | | | Joined: Apr 2005 Posts: 6 New Guy | | New Guy Joined: Apr 2005 Posts: 6 | I don't get it. I have a 51' Chevy 1/2 ton with an aftermarket ammeter. When I wire the + battery to the terminal directly behind the + side as shown on face of ammeter, the meter reads discharge when running. When I wire the the battery to the terminal directly behind the - side as shown on face of ammeter, the meter correctly reads charge when running.
????????I don't get it??????? I allways thought that + terminal is on positive side of ammeter and the - terminal is on negative side of ammeter. Is it possible my ammeter's terminals are switched? Unfortunalety, my aftermarket ammeter is 20+ yrs old and I have no instructions/model /etc. :confused: :confused:
'51 1/2 Ton
| | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | chevyjet, I think you're right in your speculations about the + and -, their locations and how they connect, but maybe some engineer at the XYZ Ammeter factory did it his way! If your charging system is functioning properly, then however you connect it to read right is the right way!  Stuart | | | | | Joined: Dec 2006 Posts: 1,464 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 1,464 | Yeah, Stuart is right on here, wire it so it reads correctly. But see, in my old under-developed brain this is exactly how it should be wired. This is how I see it:
Since the alternator, when running, is "more positive" than the battery the ammeter "+" should face the alternator, not the battery. But
the engineers at GM didn't see it that way so a stock ammeter is "+" towards the battery. That seems backwards to my way of thinking - pass the vodka Stuart. | | |
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