There is no others besides the ones on the thermostat housing. One is for the computer, one for gauge. I think the gauge is the one on the drivers side.
As for the water pump the best way to check it, is to take it out and look at the impellers.
To take it out you need to remove the fan and shroud.
Then locate your lower radiator hose and this goes to a nipple on the block. There are two (8mm i think) bolts on both sides of the nipple/tube. This needs to be removed to all the water pump to come out. Then its just 3 bolts on the actual water pump.
Check this thread I started to show what bad vs good impellers look like. Scroll down to the pics.
No Heat, Replaced Heater Core and T-stat