Rear camera system for a vehicle with a trailer

A trailer plug for transmitting power and signals between a vehicle and a trailer, comprising:

• a power conductor configured to receive power from a vehicle, wherein the received power is used at least in part by a trailer video camera;
• an original equipment manufacturer circuit coupled to monitor a transmission of the vehicle, the circuit comprising three or more video inputs, wherein a first of the video inputs is coupled to the one or more video signal conductors, a second of the video inputs is coupled to a vehicle video camera, and a third of the video inputs is coupled to a video source on board the vehicle, wherein the original equipment manufacturer circuit is configured to receive transmission information and to choose a video input of the video inputs based on the transmission information and the one or more video signals from the trailer camera, wherein the first of the video inputs is chosen in response to the one or more video signals being present on the one or more video signal conductors and the vehicle being in reverse, wherein the one or more video signals are provided to an in-vehicle dashboard display associated with a vehicle navigation system, wherein the video source on board the vehicle is configured to provide vehicle navigation information for display on the in-vehicle dashboard display, wherein a first video signal is provided across an interface comprising more than 7 pins, wherein at least four pins are for providing signals for the trailer lights and at least one pin is for the one or more video signals from form the trailer, wherein the interface is configured for a pluggable connection, wherein the pin is disposed outside of a circular pattern about a center point associated with the 7 pins, wherein the interface comprises a first side configured for the pluggable connection to the trailer and a second side opposite the first side configured to receive a pluggable connection from the vehicle, wherein an image from the first video signal from the trailer video camera is provided on the in-vehicle dashboard is provided in a window or inset in an image provided from the vehicle video camera.

A method of transmitting power and signals between a vehicle and a trailer, comprising:

• creating an electrical connection between the vehicle and the trailer;
• providing power to one or more electrical components of the trailer through the electrical connection, wherein the one or more electrical components comprise one or more video cameras;
• transmitting one or more video signals, through the electrical connection, from the one or more video cameras of the trailer to the vehicle, wherein the one or more video signal are provided on a conductor proximate a plurality of trailer light conductors;
• and
• automatically selecting the one or more video signals using an original equipment manufacturer circuit coupled to monitor a transmission of the vehicle, the circuit comprising three or more video inputs, wherein a first of the video inputs is coupled to the conductor, a second of the video inputs is coupled to a vehicle video camera, and a third of the video inputs is coupled to a video source on board the vehicle, wherein the original equipment manufacturer circuit is configured to receive transmission information and to choose a video input of the video inputs based on the transmission information and the one or more video signals from the trailer camera, wherein the first of the video inputs is chosen when the one or more video signals are present on the conductor and the vehicle is in reverse, wherein the one or more video signals are provided to an in-vehicle dashboard display associated with a vehicle navigation system, wherein the video source on board the vehicle is configured to provide vehicle navigation information for display on the in-vehicle dashboard display, wherein a first video signal is provided across an interface comprising at least eight pins, wherein at least four pins are in a circular arrangement and for providing signals for trailer lights and at least one pin is outside a circumference of the circular arrangement and is for the one or more video signals from the trailer, wherein the interface is configured for a pluggable connection, wherein the pin is disposed outside of a circular pattern about a center point associated with the 7 pins, wherein the interface comprises a first side configured for the pluggable connection to the trailer and a second side opposite the first side configured to receive a pluggable connection from the vehicle, wherein an image from the first video signal from the trailer video camera is provided on the in-vehicle dashboard is provided simultaneously with an image provided from the vehicle video camera.