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| wiring in an ammeter https://slantsix.org/forum/viewtopic.php?t=55039 |
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| Author: | Greg Ondayko [ Sat Apr 05, 2014 10:11 am ] |
| Post subject: | wiring in an ammeter |
I am wiring up my drag car from scratch. no stock harness etc. I am wiring in an ammeter. where do the 2 terminals of the gauge get wired to t get an accurate reading? Greg |
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| Author: | Joshie225 [ Sat Apr 05, 2014 10:15 am ] |
| Post subject: | |
Negative side to battery + and the other side to the rest of the electrical system including the alternator. This assumes you want to know the power going into and out of the battery the way most ammeters are wired. |
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| Author: | wjajr [ Sat Apr 05, 2014 10:46 am ] |
| Post subject: | |
Greg, Think of amp gage as a direction of electron flow indicator. Install it such that when juice if flowing from alternator to battery the gage reads +, and when all flow is from battery it reads minus. The stock method is black wire from alternator passes through fire wall to gage, from here it splits off to loads both fused and not and back out to the battery with a red wire. So when alternator is contributing more flow of electrons that is to say charging battery, gage reads +, and when battery is contributing more electrons to the harness compared to alternator out put the gage reads negative. Just look at a stock wire diagram and see how the gage is located between load (stuff being powered) battery and alternator. Cross off any load in diagram you do not have, and that’s one way to accomplish your mission. oops... I got tasked to perform a "Honey Do" mid post, and Josh popped in with a clearer explanation while in the trenches. Bill |
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| Author: | DadTruck [ Sun Apr 06, 2014 5:13 pm ] |
| Post subject: | |
just asking,, any specific reason for going with an ammeter and not a voltmeter? A voltmeter tells you the power available to run the ignition, fuel pumps,, |
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| Author: | Greg Ondayko [ Sun May 04, 2014 7:10 pm ] |
| Post subject: | |
Quote: just asking,, any specific reason for going with an ammeter and not a voltmeter?
the ammeter tells me when the alternator has tossed a belt.. almost instantly..A voltmeter tells you the power available to run the ignition, fuel pumps,, maybe a volt meter would do the same .. but driving all old Chrysler cars I am used to looking at the ammeter. Greg |
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| Author: | DusterIdiot [ Sun May 04, 2014 8:39 pm ] |
| Post subject: | Yep... |
Quote: the ammeter tells me when the alternator has tossed a belt.. almost instantly..
Yep, nothing stares at a mopar driver better when a belt goes, the red wire on the alt burns through, or the alt is toast than seeing the amm needle take a nose dive to "D"... (next after that in a couple minutes the temp gauge goes to "H" if it was the belt...been there).-D.Idiot |
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