Wiring Help

You mean something similar to the one described in the usermanual for a single controller, but to the extent of all controllers?

It sounds like you would have to use a relay system that has a DPDT, so that when the relay engages or disengages, that the contacts change over at the same time.

If you want to completely cut off power at the same time those relays take effect is to do the same to the power control and ground pins(with no battery attached on the power control line). The power control when shorted to ground, will cause the controller to turn off. In addition to having the vmot removed from the battery to then short to ground, will allow the controller to discharge the capacitors.

You'll want to check the relays to make sure that they are timed together in sequence so that they are all in sync with each other. Some relays will have a quick change over when energized or de-energized, others are slower.

More than likely input A - H voltage. Judging by the schematic it drives the led's to flash.

There won't be much of a change if you don't use it.