Can't seem to find a photo / image anywhere of a 4 player adapter, only instructions for building one
... How to build the four player adaptor
... Amiga 4 Joysticks
Instructions for how to build a multitap were included in the manual to classic Amiga racing sequel Super Skidmarks . The Amiga multitap would plug into the computer's serial port and provide two additional ports for use.
I *think* dlfrsilver has one, maybe he can take a photo and post? *** or anybody else that has one ***