A dynamic electronic sign mounted to an anchored mounting structure having a frontside and a backside, the dynamic electronic sign comprising a plurality of weatherized display modules; a plurality of structural frames for supporting the plurality of weatherized display modules, each structural frame having a back portion for coupling to the frontside of the anchored mounting structure and a front portion defining a plurality of bay members for receiving corresponding ones of the plurality of weatherized display modules; at least one wiring harness including a first end for coupling to a power source mounted backside of the anchored mounting structure and a plurality of power extensions for coupling the power source to the plurality of weatherized display modules.

A method of converting an existing signage mounting structure to an electronic sign comprises using an installation kit for providing and installing at least one section sign assembly, loaded with a plurality of display modules and having a power routing system with a plurality of individual power extensions extending from a single node to a plurality of display module receiving bays node receptacles, wherein passageway openings at a rear portion of the at least one sectional sign assembly facilitate replacement of individual ones of said plurality of display modules from a rear side of the sign construction, and coupling said single node to a source of power for completing the conversion.