Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. The support frame includes side rails having an inboard section and an outboard section, such that the outboard section is positioned adjacent to the top surface of the sidewall of the cargo box to aid in the supporting and positioning of the support frame. Each BMS service area has associated therewith a portion of the total number of BMS bearers. The transmission capability of the at least one shift element is set depending on this difference. Alternately, if the PWM signal for one LED quickly follows the PWM signal for the other LED, the LED indicators provide a highly distinctive strobe effect.