Good ideal. Before reinstalling the bumper I taped the end of the plug. I was just curious what it could have been used for. Thanks.Low washer fluid warning light? Our fluid reservoirs don't have the hole precut but i'd bet if you source the sensor overseas and plug it in, a new light magically appears on the dash (when fluid low). I forgot to try but, at your own peril, you can try jumping the plug and see what happens.