adding tell tale water pee tube??? can I

[Blue_Runner]

I know it could be done on the old Johnson 9.9 / 15 hp motors. I know yours isn't a 9.9 or 15hp but It would seem the concept of converting a non-overboard water indicator would be similar or the same.

Look at the last 4 or 5 pages on this link:
http://www.leeroysramblings.com/water_circulation.htm