Jayco Flamingo ST

If the water tank is of the plastic type then it is very simple.
When you purchase the water guage they come with fitting instructions.

I have a Jayco swan, The previous owner put on a clear plastic filler pipe, All i have to do is crouch down and have a look at high the water is up the pipe, not as convenient as a gauge but does the same job

Shane

Jayco has a good forum that covers most issues, you might want to try that.

http://forum.jayco.com.au/forumMessages.asp

JS.