A two-piece housing solution provides several benefits such as optimized manufacturing and faster installation. In turn, these benefits provide cost savings. In a typical one-piece housing installation, the process of installing housing and wiring is sequential. However, with the rear-fit solution, users can do these tasks in parallel. This ability reduces overall installation time which provides a reduced lead-time to customers or quicker on-site installation. Additionally, wiring of connectors can be done at facilities that specialize in such manufacturing. This reduces risk for wiring errors and provides opportunity in cost savings through economies of scale.