Banzaiii67
Well-Known Member
To summarize: I recently burned the fuseable link due to what I believe was a faulty solid state voltage regulator.
The fix: I replaced the voltage regulator with a standard motor product solid state regulator, and in addition I ran 8ga wire to the starter relay, then off the starter relay I ran more 8ga to a 60 amp maxi fuse which is 6" before the positive terminal, then obviously connected to the postive post. I used dielectric grease at every new connection.
Today I fired it up with a fully charged battery (it read 12.7v after a 2 day tickle charge) and took a reading with a reliable newish multimeter and it read a rock steady 14.9 at idle and without a load and dropped to 14.8 with a load. With increased rpms the voltage when unchanged.
Everything tell me that's too much voltage.
The alternator was tested at napa, and passed. It was off a c body with dual pulleys, I believe it to be a rated 60amp alternator but definitely is not new, nor rebuilt.
I did not run a ground from the alternator body to a voltage regulator bolt , I did however scuff the paint to bare metal around the mounting holes for the voltage regulator. Do I need to add a ground wire?
I did measure on top of the battery post with the multimeter, not sure if it matters that much if it's measured at the post or between the terminal.
Any ideas on next steps?
The fix: I replaced the voltage regulator with a standard motor product solid state regulator, and in addition I ran 8ga wire to the starter relay, then off the starter relay I ran more 8ga to a 60 amp maxi fuse which is 6" before the positive terminal, then obviously connected to the postive post. I used dielectric grease at every new connection.
Today I fired it up with a fully charged battery (it read 12.7v after a 2 day tickle charge) and took a reading with a reliable newish multimeter and it read a rock steady 14.9 at idle and without a load and dropped to 14.8 with a load. With increased rpms the voltage when unchanged.
Everything tell me that's too much voltage.
The alternator was tested at napa, and passed. It was off a c body with dual pulleys, I believe it to be a rated 60amp alternator but definitely is not new, nor rebuilt.
I did not run a ground from the alternator body to a voltage regulator bolt , I did however scuff the paint to bare metal around the mounting holes for the voltage regulator. Do I need to add a ground wire?
I did measure on top of the battery post with the multimeter, not sure if it matters that much if it's measured at the post or between the terminal.
Any ideas on next steps?
