[Mike V. Florida]

Sponsored Links (Register now to hide all advertisements)

Originally Posted by Fred K-OR

This question is about an alternator I aquired with an engine awhile back. I do not have any history on it and would like some help from someone that knows much more about these things than I do.

Questions are:

1. Is it a 6 volt alternator?

Can't tell from looking at the outside, you need the part number of he regulator.

2. In looking at the end of the alternator opposite the pulley (see picture), I know the one connection that is at about 10 o'clock says Bat. But what is the one that is down at about 8 o'clock for?



3. On the "top" of the unit (see picture) it has two plug type things and it shows a "12" right below these plugs. What is this for?

One BAT, one field and one sensing. Actually the field wire goes to the "idiot light" and then to the 'RUN' position of the ignition switch. The sensing wire either goes to the 'BAT' side of the ignition switch or the 'RUN' side depending on the application. When the ignition is in the run position the sensing terminal is energized with battery voltage and the field terminal is energized with a current limited voltage through the lamp. When the alternator starts charging, the field voltage raises and the voltage differential across the lamp reduces and the lamp goes out. The charging voltage is 'sensed' through the sensing wire and the internal voltage regulator regulates the voltage to about 14 volts.

Rather than ask so many questions here, is there somewhere I can go and look up how to install an alternator like this?

Thanks again for the help.

Here are a couple of sites for the most popular models the 10 and 12SI I don't know what model yours is;

http://mightymo.org/Proj_OneWire.html

http://www.alternatorparts.com/10si-all-in-one.html - Scroll down for parts convert/repair your alt.

PS - This information comes to you from a "purist".