Abstract: A foldable panel assembly (e.g., foldable tonneau cover) having first and second panels, the second panel being rotatably attached to the first panel about an axis of rotation. A wire management system is provided including a junction box disposed with the first panel and having an electrical connector. An electrical wire is attached to the electrical connector and extends from the junction box over an interface between the first and second panels. In the extended position, the electrical wire has an amount of slack sufficient to allow the electrical wire to move relative to one or both panels. In the folded position, the amount of slack in the electrical wire is reduced relative to the extended position and the electrical wire is taut over the interface. This configuration permits the panels to be folded and unfolded without pinching or straining the electrical wire during said folding and unfolding.