1968 Dart Fusable Link?

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Pictured is a wiring diagram for a 68 Dart. I am putting together a car from couple different cars. I have already put the dash back in the car. I have power at the starter relay then at the plug that runs into the firewall. Nothing will power after that so I suspect the Fusable Link noted in the diagram is stopping power (I hope) There is no fuse prior to the plug on the firewall, unless it's buried in the wiring harness. I can't see anything where the plug comes out under the dash. Does anyone know what side of the firewall this fuse should be, if under the dash, where would it be, what would it look like (an inline fuse)? Any help would be appreciated.