Identify alternator terminals

[ridgy]

Easy starter for 10 for someone here I'm sure.

Can you identify what each of the terminals here are, and is one of them the elusive W terminal for a tacho?

 

[andsarkit]

Assuming it is for a Yanmar.

Picture of original Hitachi alternator not your Bosch replacement

The extra wire is the W for a rev counter (should have an inline fuse)

 

[VicS]

What andsarkit says. ................
The tacho connection on Hitachi alternators is "P"
L is the warning light connection
R is the excitation connection which should have 12 v applied from the "ignition" switch when in the run position