90 Quattro 20V (Canada) L5-2309cc 2.3L DOHC (7A) (1989)
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Control Unit: Component Locations
Differential Lock Control Unit (Under Rear Seat):
A- blue, to vacuum servo
B- yellow, to vacuum servo
C- violet, from intake manifold
Audi Workshop Service and Repair Manuals
Component Locations|Page 7172 >
< Final Drive Fluid <--> [Fluid - Differential]|Capacity Specifications|Page 7166
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