Question about 1992 Honda Accord

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Alt wiring im trying to hook up a volt meter to my honda and dont know what wires to hook up to the alt

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Just to hook up a volt meter,simply touch the positive(red) , to the post with a 10m nut & wire,on top. At the same time, touch the ground(black) lead to the negative battery terminal. You should read 13.5-14.7 volts.

Posted on Jun 23, 2009


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Is it possible you have a blown fusible link? Wiring diagram should show where these are located. You say the small red wire is zero volts with key on. Is this the wire that supplies "exciter" volts to alt? If so, it should be 12 volts at key on I think.

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How do you know the alt is good? Also check to make sure all the wiring is ok between the alt and battery and relay. if all wiring is ok try to hook a voltage meter to alt and see if it is putting anything out. could be a fuse or the relay or even the alt.

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have you checked to see if there is a faulty groundwire from Alt to engine block? Some alt's have a separate wire. Also check the engine to body ground wire for continuity, likewise the battery ground.

If you are confident in your skills, use a volt meter to check the out put wire of the alt. Ensure that the meter is set to DC Volts, start the engine and very carefully place the red + probe of the test meter to the out put connection of the alt. Ensure that you obtain a good ground for the black - probe of the meter and check the reading on the meter. Alt's charge at idle, so you do not have to rev the engine. There should be a reading, if no reading double check that the alt nground is the same ground which you are using for the test meter. If no reading increase the engine rpm. Still no reading? The alt is not putting out any voltage

Obvious question, but it has to be asked. When you fitted the salvage yard alt, did you ensure that the drive key was on the shaft and mated up with the slot in the drive pulley? Likewise, did you check the old unit for having a serviceable key on the shaft? It has been known for drive pulleys to cease driving, just spinning around doing nothing due to not having a drive key, or the key was damaged.

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Sorry to hear about this Dale but I don't believe you have done anything incorrectly. Use your DVOM with key on to check for 12v at the pigtail wire.The main cable should always have 12v but the pigtail should have 12 volts with the key on and or running safer to check with just the key on.Check this out and we can proceed with further instructions.

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My alternator went out, or so I thought. I replaced it and the system still won't charge. I just replaced the battery and I know it is good. What could the problem be?

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Check all fuses, both inside and outside. Use a volt meter to check the output of the alt., by setting the meter to D/C/ volts, put the black wire on battery GROUND and the red wire on the big terminal of the alt.,,, which the wire is held on with a nut and washer, or a lock nut.If your reading is around 12.0 - 12.6,,, try another alt....
If the reading is 13.8 - 14.6 ,, you have a problem between the alt and the battery.
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first of all since you have a hand held i figure you have a volt meter. locate battery wire to the back of your alternator while eng running test output voltage of alt. if less than 13.25v replace ( not with a autozone unit ) actually it should say 14.-16.v im glad you had your battery load tested. lets fix the charging system first of all at that point we will go from there.

hope2help shack

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does it seem to drain batt.,check elect. connection at alt.,start car put volt meter on check charging voltage between 13.5-15v put headlights on to see if volts will stay in that range.u can get a wiring diagram online from alldata !

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