Hi from Tasmania Australia after a very long time of advertising and searching for a 1971 DT1F here in tassie I finally found one rare as hens teeth in  

And just FYI, DT1F is not a model...  it's a VIN number prefix that was used for several years of DT1, DT2, and DT3...  Some major changes were made during those models so always best to look up the full VIN in the charts in the Tech Library to ID what you have.

Also most information seems to be on the USA models...  In Australia there might be differences as it seems your country got a variant that was closer to what we call the "Japanese Domestic Market" (JDM) spec.  Wiring and such might have differences from the common USA diagrams out there. 

(1971 was technically the DT1E with the possibility of a close ratio transmission depending on the VIN.)

Greetings from Tennessee USA