If those are going into the dashboard area, it's a toss up as to whether you need Freightliner or Winnie wiring info. The instrument cluster and ignition switch will be FTL, but most everything else will be Winnie. There is probably a Winnie junction or terminal block behind the dash somewhere that provides tie-in points for battery +12, ignition On +12, and ignition-run +12, which they use for various dashboard functions themselves. Might be all you need.