looks like a complete circuit to me. I can't comment on the particular question you raised about the ignition. My thinking on the surge protector would be that it is dependent on how many amps you're putting through your charger. You've got [email protected]?A, presumably somewhere in the 2-10 range, for the aux bat. If you're drawing [email protected] or so for the main pack, your breaker may not handle it being all on one circuit, and your power strip may not be able to handle that either. Worse case scenario though, you flip the breaker and have to figure something else out.