The speedo gauge stays clean and dry but the infor gauge gets condensation when i spray the hose across it,i tried to blow air around it but can not see any water movement inside at all,does the lens come off,or can i replace the gasket or seal
That water isn't from your hose... it just forms on the inside face when the cool water hits it.
All you can do, is to cut the face off the gauge, and clean it out.
If you just want it to dry... some of the gauges have the rubber plug around electrical that can come out. If yours can... leave it open for a while... and it will dry.