I am moving my optima to the trunk. I plan on installing a Circuit breaker in-between the battery and a switch. I am trying to figure out the size of the breaker. I have two fans, 40 amps each, fuel injection, I think it is 30 amps, I will check, The rest is normal 69 camaro electrics. Wiper, lights, heater. Any ideas on how big I should size the Breaker? The amp and subwoofer amp are on a seperate battery in the trunk. They are connected to the other thru a battery isolator. The amp and sub woofer are 110 amps combined. I have a 100 amp breaker on this battery.