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Audi ur-quattro differential lock switch hoses

This is a handheld-friendly page.

There are clear colour schematics available on Jim Hasletine's page. Numbering is from the knob backwards

1981-1982 single-position switch

  1. Green pipe - front and rear engage
  2. White pipe - vacuum feed
  3. Red pipe - front and rear disengage

1983-1985 two-position pull switch

  1. Yellow - rear engage
  2. Green - centre engage
  3. White - vacuum feed
  4. Blue - rear disengage
  5. Red - centre disengage

1986 onwards rotary switch

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