Index: leahi_dialin/fp/modules/levels.py
===================================================================
diff -u -rb0929a0985784c80e2d184413995a87e6aa23d4b -rf03c9a32180573f2430105ad69eb91d9f597a96b
--- leahi_dialin/fp/modules/levels.py	(.../levels.py)	(revision b0929a0985784c80e2d184413995a87e6aa23d4b)
+++ leahi_dialin/fp/modules/levels.py	(.../levels.py)	(revision f03c9a32180573f2430105ad69eb91d9f597a96b)
@@ -22,8 +22,9 @@
 from leahi_dialin.common import fp_enum_repository
 from leahi_dialin.common.msg_defs import MsgIds, MsgFieldPositions
 from leahi_dialin.common.override_templates import cmd_generic_broadcast_interval_override, cmd_generic_override
-from leahi_dialin.protocols.CAN import DenaliChannels
-from leahi_dialin.utils.base import AbstractSubSystem, publish
+from leahi_dialin.protocols.CAN import DenaliCanMessenger, DenaliChannels
+from leahi_dialin.utils.abstract_classes import AbstractSubSystem
+from leahi_dialin.utils.base import publish
 from leahi_dialin.utils.conversions import integer_to_bytearray
 
 
@@ -32,7 +33,7 @@
         Dialin API sub-class for levels related commands.
     """
 
-    def __init__(self, can_interface, logger: Logger):
+    def __init__(self, can_interface: DenaliCanMessenger, logger: Logger):
         """
         @param can_interface: Denali CAN Messenger object
         """