Re: Just upgraded my alternator and my headlights blew out!
[Re: Cudalord]
#788476
09/09/10 11:35 AM
09/09/10 11:35 AM
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Joined: Apr 2007
Posts: 2,826 NY usa
540challenger
master
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master
Joined: Apr 2007
Posts: 2,826
NY usa
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Quote:
The reading I'm getting is from the Auto Meter Gauge. It maxes out between the 14 and 16 line on the meter, closer to the 16. I have the ground on the voltmeter grounded to the motor, and the positive wire going to the ACC in the fuse box.
I'm going to be picking up a multimeter and running more tests on my outputs.
Good tyhe multimeter would be good to double check the gauge is getting the right reading. If the gauge is right your will have an even higher reading at the alternator stud
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Re: Just upgraded my alternator and my headlights blew out!
[Re: Cudalord]
#788479
09/09/10 07:20 PM
09/09/10 07:20 PM
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Joined: Oct 2007
Posts: 3,903 Oregon
hooziewhatsit
master
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master
Joined: Oct 2007
Posts: 3,903
Oregon
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When it's running, check the voltage going into the alternator on one of the two leads. I'm betting you'll find that it's about 1 volt lower than what you have at the battery.
This is the sum of voltage drops from going through the bulkhead twice, the ignition switch, and the ignition switch plug twice.
The voltage regulator is seeing a voltage that's ~1v too low, so it's compensating and giving you a 'real' voltage that's ~1v too high.
You can either clean all the connections and hope it helps (didn't for me), or you can install a relay that is turned on by the key, and switches a good 12v to the ignition system.
If you jump power from the battery to the voltage regulator, you should see the voltage at the battery immediately drop to ~14.5v.
If you ever find yourself in a fair fight, your tactics suck.
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