>One was tach output and the other was the on/off trigger for the alternator. You'll use the tach wire through the new regulator. I used the original on/off trigger wire to power the on/off for the new regulator. Just read the instructions for the new alt and regulator and it will walk you through all the details.<
In most instals the >trigger< wire is wired to the back of the rotary switch (to save the alt from an idiot) , powered from the key switch , its the Field wire.
The tach wire usually goes to the tach .
.> Just read the instructions for the new alt and regulator and it will walk you through all the details.<
Good advise indeed!
Most proper battery charging is done at the C/10 rating.
A bat of 100A rating (20 hour rate) would be charged at 10A
If its down to the 50%SOC it will take 3 hours to get to 80% and many many more to get to 100%, so is seldom done unless dockside , solar or LOOOng engine hours are done.
This means a good 40A alt will maintain 400A of batteries (about 400lbs worth).
A 70A could charge 700A , 700 lbs of batts .
This is for WLA , wet lead acid batts , what most have .
By doubling the batt cost with AGM a higher charge rate can be maintained.
Big alternators may or may not result in a quicker charge for most folks..