Dashboard Alternator light
Hi all, The MPPT controller on my coach will deliver 14.6 volts in bulk mode which is fine. In fact it’s exactly what the specs on my GC2 house batteries call for. But when I turn on the engine and...
Forum Discussion
eric1514 wrote:
It would be nice if I could disable the chassis battery charging from the solar while the alternator is running but I'm not that smart. I'm going to study the wiring diagram but this is not my line of work.
You need a relay with the charge line routed through the NC terminal and the coil powered by an ignition source (i.e. on when running) from the fuse box.
Basically like an isolator relay, but by using the normally closed connection it will open when running.
The problem is if you are driving at night and solar isn’t putting anything out you lose the alternator charging the house batteries.
On second thought, why not just install a manual switch or switch the controls a relay?
