Review on BUNKER INDUST Shooter Harness Waterproof by Inyong Dow

Said to be waterproof but it isn't! Worked fine on my golf cart for 2 weeks, then started acting very unusually and getting the lightbar wet after washing the cart for the first time. The behavior started immediately while I was washing it. The light did not go out completely and remained very dim/some LEDs were still on. The light did not come on fully when switching on/off. I hope the seller sees this and contacts me for a solution. The return window has passed but I've only been using it for a few weeks. Bought in January when I was assembling my golf cart. Help!