Doesn't have all the parts for my vehicle can't ve...

Doesn't have all the parts for my vehicle can't verify exactly what part go to my truck and my truck has a block heater has a block heater and there is no block heaters on the catalog also known as a freeze plug heater and the voltage regulator. The catalog says goes to my vehicle my truck does not have that part on it whatsoever and my vehicle is a 94 Chevy turbo diesel C 2500