I've been using the non-smart version of the Orion 12/24 Non-isolated 10A Converter for alternator charging between my 12v vehicle system and my 24v house battery. I've been turning it on and off manually using a circuit breaker but would like to make this process automatic for obvious reasons and would like to do so in as elegant a fashion as possible. After researching, I decided that the Cyrix might be able to work in this situation. I wired it up as showing my attached diagram. However, once I started the vehicle and engaged the system, I did not getting any current.
One thing I did not do is connect the small negative terminal of the Cyrix, since I assumed that this was only necessary when using the "start assist" feature, which I am not using. Is this incorrect? Would this solve the problem, or is the cyrix simply not suitable for use with the Orion converter?