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1988 & 1989
Notes to the MB wiring diagrams
MB engine rapid component locator
MAC-12D Electronic Ignition Control Unit (ECU)
MB Relay and Controller locations
39 - Audi Quattro, 1988, MB engine
42 - Audi Quattro, 1988, WX engine
25 - Heated seats
26 - Electric windows
28 - Electric mirrors
29 - Front and rear fog lights (not Switzerland)
30 - Front and rear fog lights (Switzerland)
31 - Cruise control - WX engine
43 - Cruise control - MB engine
33 - Rear screen wiper
34 - Daytime driving and fog lights - Sweden
35 - Daytime driving and fog lights - Norway
37 - ABS system with longitudinal accelerometer - see also notes and pinout
36 - Radio (to December 1988) - but see Notes and Errata - should be to August 1987
37 - Air conditioning - MB engine
44 - Air conditioning - WX engine
41 - Electronic dashboard - Bulb Locator - pinout
45 - Radio (from December 1988, not Switzerland) - see also ISO connector conversion
46 - Radio (from December 1988, Switzerland) - see also ISO connector conversion