A steering wheel control interface module that can automatically detect the type of vehicle it is installed in and automatically detect the type of aftermarket radio it is sending messages to. In addition, the interface module can retain certain user pre-selects and use those to properly set the state of an aftermarket radio.

Systems and methods for operating an electric power distribution bus of an electric or hybrid vehicle are described. In one example, an output of an electric power consumer is decoupled from other electric power consumers so that electric current drawn from the electric power distribution bus is lowered while the electric power consumer provides a capacitive load to the electric power distribution bus, thereby reducing voltage ripple associated with the electric power distribution bus.

An electric vehicle (EV) battery unit and installation method is provided herein. The EV battery unit includes a modular housing with a central section with batteries positioned therein and a first lateral section with a battery cooler that is designed to reduce a temperature of the batteries and an inverter that is positioned therein and electrically coupled to the batteries. The modular housing further includes a first frame attachment interface profiled to attach to a first longitudinal frame rail in an EV and a second frame attachment interface profiled to attach to a second longitudinal frame rail in the EV, where the batteries are positioned laterally between the first and second frame attachment interfaces.

Methods and systems are provided for cooling a hydrogen fuel cell assembly. A vehicle system, in one example, includes a hydrogen fuel cell assembly electrically coupled to a traction motor, positioned behind a cab, and including a plurality of hydrogen storage tanks and hydrogen fuel cells. The vehicle system further includes a fuel cell cooling assembly including an inlet manifold in a deflector, where the deflector is fixedly coupled to and positioned vertically above the cab and designed to direct airflow to a fan array that is coupled to a fuel cell assembly heat exchanger, where the fan array is positioned behind inlet manifold and longitudinally offset therefrom.

Methods and systems are provided for an electric vehicle powertrain. The vehicle system includes an electric distribution assembly with a junction box that is electrically coupled to a traction motor-generator and is designed to electrically coupled to, via separate circuits, a traction battery assembly and a hydrogen fuel cell assembly that is positioned behind a vehicle cab. In the system, the traction battery assembly is positioned vertically below the hydrogen fuel cell assembly.

A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.

Provided is a power relay assembly. The power relay assembly comprises: a support plate having at least one electrical element mounted on one surface thereof and including a plastic material having a heat dissipation property and insulation property; at least one bus bar electrically connected to the electrical element; and an electromagnetic wave shielding unit for shielding electromagnetic waves generated from the electrical element.

A first engagement body is provided to one of two assembly members to be assembled with each other through a relative rotation operation pivoted about a relative rotational axis, and a second engagement body is provided to the other assembly member. The first engagement body includes a first and a second spaces, the first space being provided to allow rotation of a third opposing wall part of the second engagement body relative to the first engagement body, which is pivoted about the relative rotational axis until engagement between the first engagement member and a second engagement member of the second engagement body is completed, the second space being provided to allow rotation of a fourth opposing wall part of the second engagement body relative to the first engagement body, which is pivoted about the relative rotational axis until engagement of the first and the second engagement members is completed.

An electrical connection box includes a casing and a cover member. The cover member includes: a cover-member main body; a restriction piece arranged along an arrangement direction with respect to a pair of locking pieces; and a rigid part that is disposed with a space provided with respect to the cover-member main body in an orthogonal direction and is extended toward the orthogonal direction. The casing includes: a pair of restriction reception parts opposing to respective ends in the arrangement direction of a pair of the restriction pieces in a state in which the cover member is fitted to the casing; and a rigid reception part having a rigid-reception-part projecting wall part located between the rigid part and the cover-member main body in a state in which the rigid part is inserted and the cover member is fitted to the casing.

A new wiring and power and communications system for an automobile that includes a plurality of devices, wherein the devices are connected to a backbone section that has an outer sheathing, a first conductor disposed within the outer sheathing, a second conductor disposed within the outer sheathing, a pair of inner sheathing members disposed within the outer sheathing and located on opposing sides of the at least one conductor, the inner sheathing members configured to electrically insulate the first conductor from the second conductor, and a shield member disposed within the outer sheathing.