Acceptable ammeter hookup locations for stock gauge? - Ford Bronco Forum
 
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post #1 of 4 (permalink) Old 02-06-2017, 09:10 AM Thread Starter
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Acceptable ammeter hookup locations for stock gauge?

So I am working on finishing up my charge circuit and I am down to ignition feed and ammeter. Should I place my red wire to the starter solenoid and place the other green and red wire to the alternator Battery lead? Thinking an inline fuse would not hurt either, what amperage, thinking 5 amp?
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post #2 of 4 (permalink) Old 02-06-2017, 05:08 PM
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Did you change over to a single wire alternator? I sent in the stock ammeter to get converted to voltage meter.

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post #3 of 4 (permalink) Old 02-07-2017, 04:27 AM Thread Starter
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Originally Posted by xMUDBUCKETx View Post
Did you change over to a single wire alternator? I sent in the stock ammeter to get converted to voltage meter.

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Nope I put an adjustable regulator and 2G big case external regulated.
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post #4 of 4 (permalink) Old 02-07-2017, 10:44 AM
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The factory ammeter uses a special wire and the meter is actual a millivolt meter. The special wire acts like a current shunt and they measure the millivolts across the shunt. The higher the current draw the higher the voltage to the gauge. FOrd did it this way so they didn't have to run large gage wires thru the firewall for a true ammeter. I haven't looked at the diagrams in a long time but I can tell you it does hook at one end to the battery side of the starter solenoid and the other end of it supplies power to the rest of the whole electrical system not counting the starter. If someone would kindly post a pic of the diagram for the ammeter gauge I can show what I am talking about. I don't have access to all of my filers right now.
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