Are these the instructions you are referring to?
http://aristocraft.com/techinfo/manuals%20pdf/11091reversingunit.pdf
Age is only a state of mind, keep the mind active and enjoy life
The only important thing to watch is that the gaps on the rerailing plate are on the same rail,left or right, with your power leads from the reversing unit attached any where in between, extremely simple to wire up, I have one in use and they are perfect for a Trolley Line or similar.
Regards, Danny Sheehan in Oz.
The Aristocraft rerailer is multi-purpose.
It can be a rerailer if the shim and washers are placed on the bottom to close the gap.
FOR THE REVERSING UNIT, THE DIODES GO ACROSS THE TRACK GAP IN THE MIDDLE OF THE RERAILER.
No need to isolate a rail if the diodes are on the bottom of the rerailer unit.
I prefer to use the diodes on my regiular track, and use the rerailer as a rerailer outdoors.
Get the Garden Railways newsletter delivered to your inbox twice a month