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Terminal Assignments, Circuit Diagram
Terminal Assignment of 12-pin Connection Plug
1 Battery +, Ter. 30
2 Ambient temperature sensor, ground
3 Ground, Ter. 31
4 Ambient temperature sensor, signal line
5 Ignition lock, Ter. 15
6 Instrument illumination, Ter. 58
7 Instrument illumination, dimmed, Ter. 58d
8 Automatic antenna
9 Data bus SCL, serial clock line
10 Data bus MRQ, master request line
11 Data bus SDA, serial data line
12 Odometer signal
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