I have an old programmable irrigation system that has stopped working. I purchased a new one, but found the old 24VAC clips (see pic) do not fit into the new one two prong connector. Is it pretty straight forward to fix this? Where would I get the parts for this type of change from old clips to the new one?

Manual for the new system:

https://www.orbitonline.com/site_files/manuals/57874-24%20rD(5)1.pdf

Pic of the old system