Abstract: A connection assembly (11, 11a) between two housing chambers (1, 2) of a control unit includes a housing having at least two housing chambers (1, 2) and a housing partition wall (3) for separating the two housing chambers (1, 2) and defines a break-through (7). The first housing chamber (1) is configured as a dry chamber and comprises at least one first contact partner. The second housing chamber (2) is configured as a wet chamber and comprises at least one second contact partner. An electrical line (5) electrically connects at least the first contact partner to the second contact partner. The electrical line (5) is guided through the break-through (7) and includes, locally in the region of the break-through (7), a single-layer or multi-layer sheathing (8) for sealing the break-through (7). An electronics module utilizing the connection assembly is also disclosed.