I want to connect two Orion's in parallel to charge twice as quickly when driving. However, I've read that in order to do this you need to connect a 'hot wire' from the ignition to manually turn the units on, as using the voltage sensing can cause issues if there's a slight lag between the two units, causing one to not turn on.
I understand how to connect the two units in parallel, but how do I connect to the ignition to act as a switch? I have a Mercedes Sprinter, not even sure where to start - thanks in advance! I presume there's no other way to charge quicker than 30A? I have a Euro 6 engine so can't use a standard VSR.