Fixing a Sangamo street lighting time switch with solar dial.

A quick look inside one of the electrical boxes associated with some styles of street lighting, and the repair of the Sangamo time switch inside.
Also featuring the sudden disassembly of the more-complex-than-expected solar dial that compensates for differing hours of darkness throughout the year. (I did actually manage to reassemble it again after two goes.)
I'm not completely sure what component was missing from the box. I don't think it was a contactor, and the only convenient ballast to fit remotely in local street lighting is the older mercury vapour type with no high voltage ignition pulses.

If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm