<strong>Yahoo Message Number: 63344</strong>We are using our 06 Affinity for first time in several months. We have electric valves for both the gray and black water. The gray drain valve opens fine as usual. When I press the black water drain switch the light glows for a second, then goes out. The valve does not open. The manual lists one fuse for both valves. Any ideas? Thanks. <br/>Mike...