These are the chips needed to link  two CRUISIN' USA driving games together.
They are used but tested working.
 
If you need two sets, buy two items.
It includes u10-u13 4.1 game ROMS and the u38 linking chip.
Both games need a link chip and both games need to run the 4.1 software u10-u13
 
Dipswitch Bank U97
 
Left Game (Player 1)
Dip Switch 2 (U97)
SW6=On (Link On)
SW8=On (Master)
Right Game (Player 2)
Dip Switch 2 (U97)
SW6=On (Link On)
SW8=Off (Slave)
 
Switch 6 and 8 are the only ones that should be used for linking.
I can also confirm these instructions also work.
Price is for 1 set.