MSD 6AL Wiring and Ballast

Mattax said

This should cover the MSD hook up on pre-70
Not charging after MSD 6AL installation.


Dual field is a misnomer.
There's only one rotor. What people call two field is really just two insulated terminals. Most pre-70 alternators had one of the brushes grounded to the housing.

So if you grounded one of the terminals, that's all that's needed for a positive controlling regulator.
View attachment 1715493334

Click to expand...

Mattax said

This should cover the MSD hook up on pre-70
Not charging after MSD 6AL installation.


Dual field is a misnomer.
There's only one rotor. What people call two field is really just two insulated terminals. Most pre-70 alternators had one of the brushes grounded to the housing.

So if you grounded one of the terminals, that's all that's needed for a positive controlling regulator.
View attachment 1715493334

Click to expand...

I am so appreciative for your help. It’s obvious you know what yer doing as its consistent with all I’ve been told thus far.

My alternator may be a post 1970 rather than pre? Both connections say field wire rather than a ground? Would I still ground one and connect the other field only connecting to the green wire going to the voltage regulator as shown in my picture??