One Thing For Sure . 
Its definately a DUCATI . 
Now , Shame on You . . . . you need to get out a can of Chain Bar Lube , and a tin of C.R.C. for the Al oominum . At Once . PLEASE .
Now Ducati were never renowned for building " to Spec . " so though unlikely , it could be to original build specification . :lol: 8)
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Wireing is elementry , Std. Euro colour code for 70s on could be fitted . Ordinarrilly coloured speghetti was . early may be partly Std British
colour codes . These have ' Tracers ' , say white wire with Green ' trace ' , to differentiant from the other White . White being Light ( Lamp )
related .
So White / brown trace is Oil Light .
Browns Live . :shock:
So a little investigation is in order . :idea: :mrgreen: ( as well as COROSION INHIBITING .)
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Plenty of DUCATI on Google Pictures . Your Headlamps italian . look at the 450s for period dateing . Duc went to Jap Switchgear at one stage , for some .
Id think a Clean and check over , Id be reluctant to mod other than to ' sport ' spec .
73 750 Sport .

1975 860 GT
[ATTACH=full]88024[/ATTACH]
1974 450
[ATTACH=full]46326[/ATTACH]
This sucker has similar fittings & fittments . Duc changed spec progressively , and used leftovers on end runs . So there are machines outside the regular production runs , which only really happened FROM the 860 GTS series .
LOOK AFTER IT .