Have power wires appear as it is in the Power Overlay

[Einsvies]

In the plumbing overlay, you can quickly see what type of pipes you have.  In the power overlay, all you get is white (because of the overlay showing health instead of the type).

When you move your cursor over something highlighted in an overlay, the "network" begins to flash.  This is useful for plumbing and ventilation, but it's annoying when it's done in the power overlay.  You can briefly see the types of power wires during the flashing or you can make out the shape of the power wires, but both ways aren't as intuitive as the plumbing/ventilation overlay.

In order to show the health of a circuit, the overlay can use a drop shadow effect with the same colors (purple/white/orange/red).

This will hopefully make replacing a power grid much easier for anyone.