To be quite honest, I'm not sure about a DCC but this kit came with everything I needed. Temp sensor, both temp and A/C relays and all the hardware. The only problem I had was installing the temp sensor in the aluminum water inlet. Very easy to overtap (tap included in kit) then the sensor tends to strip it when intstalling. I did this so I went with a cast iron inlet. Also use butt connectors instead of quick disconnects as the latter can't handle the heat and they melt.
130 amp alternator is a must. I continued to have a discharge problem in town so I did away with the underdrive pulley and went back stock. E-fan has a bigger power advantage than underdrives do anyway. This fan performs and looks great.