My knowledge regarding about automotive electrical is just plain "average". I did some installation on my own vehicles in the past (back in the 80's) on accessories such as car stereo, alarm system, fog lights, add on tachometer and they all have everything in common about wiring, Black is ground and Red is power source. To make a long story short, I was installing a Light Post for my lawn and I got confused with the instructions on a 3 wire installation. The instruction state Black is power source, White is neutral and Green is ground. I researched on line that these colors are standard in home electrical. This beats the heck out of me. If I am going to install these 3 wires (without reading the instruction provided) coming from the Light Post to the home electrical plug outlet and with my knowledge about automotive electrical I would do it the wrong way and I could end up with getting an electric shock.