Well there is a 50/50 chance of getting it right or wrong. Of the two my luck is usually wrong…
Same when trying to insert the bloody USB thingy into the computer, right?Back in my NAVY days we called that the Fifty, Fifty, Ninety Rule. If there is a fifty percent chance of doing something the right way, and a fifty percent chance of doing something the wrong way, you'll do it the wrong ninety percent of the time.
Wait, someone thought it was necessary to create a video to explain that polarity can be reversed with incandescent but not with LED lights?