I checked to see if my battery was charging via an article in Mustangs Monthly.

Basically I am only getting 12v to the battery when running.

What else can I check?

 

Stator wire on the stator post
GNd on the ground post
Verify ground at alt (set Ohms 1 led to a ground 1 lead to end of gnd wire at alt reading 0.00 to 0.20)
Battery on the batt post
verifty 12v at the alternator (DMM to V 1 lead to good gnd 1 to battery wire at alt reading -.50 V to 0.00v from nominal)
field wire on the field post
have alt tested

-Gun

 

I have a feeling t is in the wiring, but will have a bench test done to verify!

Where does the alt ground to? block or ...
Thanks.

 

Mine is grounded on the heads, but it should be there or on the block somewhere.

 

Alt gnds to any solid clean gnd of your choice.. Not sure where it went originally. If you suspect bad gnd you can run a new wire on top of the old wire for dual gnd wires and gnd new to any good gnd source and if problem is fixed trouble shoot old gnd wire as I think it may also play a roll with the interior lights or gauges...not sure.

 

If stator and field are reversed...it wont function.. check that too

stator runs to regulator S
Filed runs to regulator F

I have found testing these wires to be difficult....check by color...stator= white and black
field= white

 

The closest post to the battery on the back of the alt is threaded bit has nothing on it. there are two other wires hooked up next to each other on their own posts.

I will look into it more tomorrow in the daylight. Thanks for the info!

 

That should be easy enough!

 

This is how mine is/was wired.



Ground is the one furthest down, the white one is next up, and the red wire is the one on the top right.

 

Mine looks different than that. Possibly newer? I will post up some pics tomorrow if I cant figure it out!