SS, to me that display of `Prime on,transfer OFF` is confusing in relation to the fuel system as the fuel system is showing opposed selections ,in the same colour /format.Since the prime pumps are only used to start,they should go `green`,then out when `off`. Likewise,the transfer pumps,green when `on`,amber when failed/not immersed/out when `off`.Otherwise it is `Illogical Captain`(Spock).....