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A little over-exposed photo of the wiring. Looks good. It's above water level should you ever get a leak (which is very unlikely).
Here again cost control. This is the green LED that lights up the coolant reservoir. Sticky tape and that's it. It work's but it's not the most enigmatic solution.
On the top of the unit is its integrated 120mm fan. The fan, which can operate at two different speeds which is controlled by a button on the backside of the unit (switches between 7 and 12 volts). The fan pulls air in through the radiator at the bottom of the unit, and exhausts it from the top.
