[mikets]

If you have a voltmeter, you can check the voltage between the +5 and the GND pins on the accelerometer to make sure it indeed gets power (in case you have bad connector). If you have an oscilloscope, check the SCK line, it should give you a train of square wave. No matter what color wires you hook it up, make sure +5 is connected to +5, Gnd to Gnd, SCL to SCL and SDA to SDA. By convention, +5 should be RED and Gnd should be BLACK.