This link should explain it.
Remote Mount TFI Ignition Module
Be aware that the shielding is fairly sophisticated. I decided to take my wire harness apart (just removing tape), so that I can re-route my harness to the new location on the fender-well. Then I will run new shielded wire from the distributor to the re-located TFI. Then I'll tape it back up and put it back into the wire loom (or what ever the plastic corrugated tubing with a slit in it is called).