From Brian Seeley@3:770/3 to All on Fri Jun 7 11:51:31 2019
Hello all!!
I saw a time back a dead test cart for the 64 that had a toggle switch to use the cart as a V586220 which I believe allowed use of a harness for troubleshooting and when you flipped the toggle it would be a V781220 which did not use a harness. I believe
I saw these on ebay, but cannot seem to locate them anywhere - any ideas or info?