Photovoltaic modules are constructed having separate positive and negative junction boxes positioned at the corners of each photovoltaic module. A photovoltaic array assembled from these photovoltaic modules can be aligned such that the positive and negative junction boxes connect in an arrangement that minimizes the amount of wire needed to install the photovoltaic array. The arrangement of photovoltaic modules connecting the positive and negative junction boxes on adjacent photovoltaic modules leads to successive rows of photovoltaic modules in the photovoltaic array are oriented in opposing directions.