There is another version of this song. It's on The Clancy Brothers LP of the same name from 1972. This album has never had a digital re-issue and is not very well known these days. Their version has the 'No matter where I roam' lines but not the 'I'm tired and I want to go to bed' section. And they credit I. King (as above) as the writer.

I've never heard this version anywhere else (but I have recorded it myself). Anyone know of this version?

Show Me The Way
1
I have watched the days melt and fade away
Ten thousand times or more
And I have drawn ten thousand conclusions
In the sand along the shore

Chorus
No matter where I roam
over land or sea or foam   
You will always hear me singing that song
Show me the way to go home.

2
I've waited in the sun and listened to everyone
of the questions that you pose
And I have found the answers
In the petals of a rose

3
I've watched you come and go,
and learned enough to know
There's nothing left to see
And in my time I've loved a girl
And I known that she loved me

https://www.youtube.com/watch?v=UKDfHbe61PI