Your battery, in effect, is round the wrong way Ted. The battery terminals should be nearest the frame. I will take a pic of mine in a while.
Edit... Your cables are also around the wrong way and the battery looks much too tall.
Probably the wrong battery came with the bike it was dry charged when I bought it still in the box. I suspect you are right it is too tall as if fitted with the terminals next to the frame they would hit the tube.
I need to know the correct battery type number as original - DS site photo shows type CB12A-A on the casing. I might get lucky and find its just all back to front - certainly my cable runs look weird. My battery is marked as a MF CB12A-A p/n712121 its 161 Tall.
I can move the Negative cable easily but the Positive one is quite short not sure where it runs across the frame from the solenoid assuming it is the right lead fitted?
I'm pretty sure the main wiring harness routing is wrong in places as it's clearly very tight in some places with excess in others.