I am trying to track down an electrical problem in the EFI system. I cannot find where "fuse 18" is located the manual says to check. Someone please clue me in as to what or where this reference is located?

 

I have no idea where the reference to fuse 18 came from. Looking at the RAVE manual, the fuses are referenced as A1-A9, B1-B9, and C1-C9. You can download the RAVE manual here, it includes the RR Classic. There is an electrical section as well as a detailed section on the 14CUX fuel injection system.