I have a few pictures of the Indivision ECS installed in my A500.
I had to extend the cable a bit to reach the other side of the A500 case then cut out a section and put in a plate for the HDDB-15 plug.
I love this thing. Great thing is with a ECS Agnus I dont need a ECS denise for ECS modes on the VGA port.
Hope this helps anyone.