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Old 07-10-2016, 01:48 PM   #1
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Grounds on car

98 ford Mustang gt. Anyone know we're the grounds are on the car. Can't find diagram anywhere. Or how do I check with a volt meter if it's getting proper ground. Help please

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Old 07-10-2016, 02:26 PM   #2
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Ground for what. ?
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Old 07-10-2016, 03:23 PM   #3
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The grounds for the car, like engine ground location, chassis ground, etc etc... im having a charging issue. I've replaced alternator and battery 2 times, and I've replaced battery terminals, I've replaced alternator pig tail.. When I first start the car it volts read 14.2.. as I turn on headlights it drops to 13.6 and never recovers to above 14, then when I turn the ac on it drops lower to like 12.7v and never recovers back to 14v even if I Rev the engine and hold it it only climbs to 13.6v. I've change the serpentine belt thinking it may be slipping under a load but still sam issue. So I'm curious as to where the grounding locations are for the body, chassis, transmission ground, I've watch some how to videos on you tube to check to see if the car is properly grounded. What should the mustang be and how should I check it on a volt meter. A wire diagram would be great.

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Old 07-10-2016, 04:47 PM   #4
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It doesn't sound like you have a problem with the grounding on your engine. You may have a short somewhere, but...

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Old 07-10-2016, 04:56 PM   #5
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I don't think you have a charging issue just using more power as your turn more things on. If it were dropping below 12 volts then there is a problem. Those numbers don't look bad at all for all the power you are using with everything turned on.


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Old 07-12-2016, 07:51 PM   #6
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I've owned the car for 4 years. It's been the same since I got it. All the info I read on it says that under a load it should always hold around 14v. Due you guys think that there may be to long of wires on the alternator pig tail I replaced. I'm still curious to know what the ground readings are for the motor, and chassis, etc,etc. That's been something else I've been reading.

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