alt plug with 4 wires??

[85-m1028]

I will be wiring my alt up soon, I got the new plug for the alt "same part from the dual alt tech article"

I know one wire is for the exciter, what are the other 3 for??

[85-m1028]

this is the article I am referencing http://www.thedieselpage.com/members/features/dualalt.htm

[HammerWerf]

The following link shows what the 4 wires are designed to do.

http://www.alternatorparts.com/cs130_sbpage2.htm

The P wire can be used to drive a Tach. roughly P = pulse

S is the voltage sensing wire.

a 300 - 500 ohm resistor is necessary to regulator happy.

A few pages to read, but the explaination is good.

HammerWerf