Originally Posted by Fotoman
I don't have a diode, I use a Echo charger for the start battery and yes the alternator wire goes to the lug on the main switch. Can that make a difference?
Wire the alt. direct to the house batt. use large wire to minimize voltage drop. Let the Echo charge take care of the start batts. independent of the house. Someday change to a high output alt. with a smart charge direct to house as well.
Only have starter batts. hooked to starter and everything else to the house bank. Have the switch only to the starter and use ut only to cross feed the house to starter if needed. This way the system is foolproof you never need to touch the switch and you can't run down the start battery bank with any house loads.
Solar to house bank as this will also maintaine start when making current via the Echo charge