For heat/basking all you need is an appropriate wattage of a regular household incandescent bulb in a domed fixture. The wattage is determined by the temperature you need to produce. As was indicated, the mid 80'sF should be fine. Chameleons need appropriate basking temperatures so that they can digest the food they eat so it could be why he's not eating.
The most often recommended UVB light is the Repti-sun 5.0 long linear tube light.
Senegals are water hogs and its important that they drink well every day.
Since most feeder insects have a poor balance of phos. to calcium its important to dust the insects just before feeding them to the chameleon with a phos. free calcium powder at most feedings.
Its also important to dust twice a month with a phos. free calcium/D3 powder to make sure that it gets enough D3 without overdosing it. D3 from supplements can build up in the system and cause health issues. D3 produced from exposure to the UVB light should not build up as long as the chameleon can move in and out of it at will.
Its important to dust twice a month with a vitamin powder that contains a beta carotene (prOformed) source of vitamin A. PrEformed sources can build up in the system so you need to be careful with them but prOformed sources won't build up.
Its also important to feed/gutload the insects well. Crickets, superworms, roaches, locusts can be fed a wide assortment of greens such as collards, endive, dandelion, kale, escarole and veggies such as carrots, squash, sweet red peppers, sweet potato, zucchini, etc.
Hope this helps!