Still Could Use Help!
1971 Plymouth Duster Alternator Test/Checks
1) Use a test light to check voltage regulator bolts for ground then run external ground with from voltage regulator bolt to stud of brake master cylinder:
(Added Ground Wire And Have Good Ground)
2) Check wires with meter from alternator to voltage regulator, should be less then 25 Ohms of resistances:
(Both Wires Going From The Alternator To Voltage Regulator Show Less Then 25 Ohms Of Resistances .7 )
3) Pull brushes from alternator to see what they should look like:
(Look To Be OK)
4) Alternator charging check using meter with all wires on the alternator connected:
(Results As Follows: Large Wire - 12.26 Volts; Middle Wire - 11.5 Volts; Top Wire - 7.6 Volts)
5) Alternator charging test disconnecting the center wire from the alternator and using a wire to ground the center post (Where Wire Was Removed) to a ground source, this should cause the alternator to charge up-ward from 12.9 to as high as 18 or 19 volts:
(Results As Follows: Large Wire - 12.24 Volts; Middle Connections - 10.9 Volts; Top Wire - 10.5 Volts)
1971 Plymouth Duster Alternator Test/Checks
1) Use a test light to check voltage regulator bolts for ground then run external ground with from voltage regulator bolt to stud of brake master cylinder:
(Added Ground Wire And Have Good Ground)
2) Check wires with meter from alternator to voltage regulator, should be less then 25 Ohms of resistances:
(Both Wires Going From The Alternator To Voltage Regulator Show Less Then 25 Ohms Of Resistances .7 )
3) Pull brushes from alternator to see what they should look like:
(Look To Be OK)
4) Alternator charging check using meter with all wires on the alternator connected:
(Results As Follows: Large Wire - 12.26 Volts; Middle Wire - 11.5 Volts; Top Wire - 7.6 Volts)
5) Alternator charging test disconnecting the center wire from the alternator and using a wire to ground the center post (Where Wire Was Removed) to a ground source, this should cause the alternator to charge up-ward from 12.9 to as high as 18 or 19 volts:
(Results As Follows: Large Wire - 12.24 Volts; Middle Connections - 10.9 Volts; Top Wire - 10.5 Volts)
