-, {std::make_shared<message_definition_t>(message_definition_t{"j1939",65253,"HOURS",8,18,frequency_clock_t(5.00000f),true,
+, {std::make_shared<message_definition_t>(message_definition_t{"j1939",65253,"HOURS",8,4,true,frequency_clock_t(5.00000f),true,