Originally Posted by hellosailor
"remove the alternator output from the switch and wire it to your house bank. Done that way,"
Stu, presumably you also mean with an echo charger or West/andina Combiner added in, so the house bank will in turn charge the starter battery.
More stuff. (Good stuff, but more stuff, for the folks who aren't running it yet.)
You can add one but it is not 100% necessary with a 1/2/BOTH switch if the owner is on a strict budget. Just use BOTH when charging and your doing the same thing as when the alt ran to the "C" post of the switch and you selected both. You will NOT however be able to charge the second bank while the switch is in that position so an ACR or Echo is very wise and an expense any owner should be talked into when moving the alt from the "C" post to the house bank..
I personally would much prefer a voltage sensitive relay or an Echo type device as it makes the system a lot easier to use. A Blue Seas ACR is about $70.00 and an Echo can be had for about $130.00..
Just had another fried diode situation a couple of weeks ago and may have one I am looking at on Friday. This is not an uncommon problem and is the reason a good battery switch like the 1/2/BOTH/OFF gets an undeserved bad rap....