Re: Setting up an aftermarket AMP gauge?
[Re: wally426ci]
#2512052
06/23/18 07:46 AM
06/23/18 07:46 AM
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Joined: Aug 2007
Posts: 6,096 Valencia, España
NachoRT74
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master
Joined: Aug 2007
Posts: 6,096
Valencia, España
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the only way to get a full load ammeter working is getting the wiring up to the stock configuration. Any parallel path to the stock wiring jumping out the ammeter will eliminate the correct ( or any, if some ) amm reading. The ammeter needs to monitoring ALL the load coming in or out to the batt.
the only exception is a shunted ammeter, where the ammeter gets a built in coil amplifier able to move the needle with a minimun load going through based on a known resistence shunt. Shunted amms are a remote reading of the load going thought the shunt and they are wired like this:
Last edited by NachoRT74; 06/23/18 07:47 AM.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Setting up an aftermarket AMP gauge?
[Re: wally426ci]
#2512053
06/23/18 07:50 AM
06/23/18 07:50 AM
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Joined: Aug 2007
Posts: 6,096 Valencia, España
NachoRT74
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otherwise, the stock wiring on full load ammeter is and MUST be like this.
( Bulkhead disposition is 71/74 B body based, maybe also E )
Last edited by NachoRT74; 06/23/18 07:52 AM.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Setting up an aftermarket AMP gauge?
[Re: wally426ci]
#2512460
06/24/18 07:03 AM
06/24/18 07:03 AM
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Joined: Aug 2007
Posts: 6,096 Valencia, España
NachoRT74
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Ammeter with shunts are specific to be used with a matched shunt. They usually are sold as a set. Mopar used this system since 75/76 and even could be used from a later model ( studs gap is the same ) but would need to get the shunt wire from the same car too. I have a 78 F mody ammeter I'd like to use on my car just changing the face, but have no idea about how much must be the resistence of the shunt on this to convert my car on a shunted system, and by now have no found literature about this, maybe just getting a harness from this car with the shunt intact ( have no idea if I could get the shunt wire from another Mopar yet ) 78 LeBaron ammeter
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Setting up an aftermarket AMP gauge?
[Re: wally426ci]
#2512462
06/24/18 07:22 AM
06/24/18 07:22 AM
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Joined: Aug 2007
Posts: 6,096 Valencia, España
NachoRT74
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master
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Valencia, España
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This is a 76 A body ammeter ( one year only ). Check the last pic and will notice the coil attached. This is an amplifier to move the needle with a minimum load, since these are not anymore full load ammeter, but is based on a resistor shunt with specific specs. 76 A body ammeter on ebay
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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