Abstract: A vehicle including a plurality of electronic control units (ECUs), an electronic controller and a signal provider device is disclosed. The ECUs may output a plurality of signals to the electronic controller. The electronic controller may obtain user inputs indicative of user selection of one or more signals of interest from the plurality of signals, and may output the signals of interest to the signal provider device based on the user inputs. The signal provider device may connect with an aftermarket external vehicle accessory and may transmit the signals of interest to the external vehicle accessory to enable the accessory's operation.