Alternator wiring...
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Fleet Mechanic
Joined: Oct 2003
Posts: 1,619
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From: Forest Hill MD
Alternator wiring...
I have been having the super high/low voltage issue with my alternator and finally had a chance to dig into it today. Looking up the info on AllData Pro, they show a 3 wire connection and a 2 wire connection...
I have two wires at the alternator. i will be honest, electrical components and I are not friends... I see some pretty bad corrosion at the "plug" side on pin 1. I have a donor truck in mind that i may be able to get a new plug from and wire it in.
I have seen that the issue is usually caused by a broken wire, but where is ti usually broken? it goes from loom to loom and I don't want to tear into it all if I don't have to.
Thanks for any help, in advance.
I have two wires at the alternator. i will be honest, electrical components and I are not friends... I see some pretty bad corrosion at the "plug" side on pin 1. I have a donor truck in mind that i may be able to get a new plug from and wire it in.
I have seen that the issue is usually caused by a broken wire, but where is ti usually broken? it goes from loom to loom and I don't want to tear into it all if I don't have to.
Thanks for any help, in advance.
Certified Thread Hijacker
Joined: Aug 2001
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Pin 1 is voltage KOER
Pin 3 is voltage at all times
If Pin 1 is broken/chafed the alternator will not charge
If Pin 3 is broken/ chafed the voltage will fluctuate from 13-15.
Pigtails are available new from any parts store.
Josh
Pin 3 is voltage at all times
If Pin 1 is broken/chafed the alternator will not charge
If Pin 3 is broken/ chafed the voltage will fluctuate from 13-15.
Pigtails are available new from any parts store.
Josh
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