You want something that fluoresces when exposed to UV. My guess is the black Rit dye will not.
I was just thinking that if black water came out the ports then I could get worried! But I'm slowly convincing myself that it's all OK. Right now I'm trying to figure out how this old Kohler was supposed to work. It's from the days of ancient tricky magnetics and has some auxiliary windings that I'm trying to figure out. And the regulator itself may be inoperative, and the adjustment rheostat is missing. Add a sidetrack where I'm trying to beat Illustrator into making a nice-looking coil, and I've managed to waste the entire morning so far. (No luck w/Illustrator.) -- Jim
