I utilized the I2C address scanner program, and it came up with:
Scanning ...
no I2C devices found.
So this is a step towards solving my problem. Looking at the schematic diagram for the bh1750fvi module that can be seen here: http://arduinolearning.com/code/arduino-bh1750-sensor.php, it seems that a 4.7 K pullup resistor is already included.
Considering that is the case, could you shed any light as to why my I2C communication is not working, and no devices are detected?