BMW E9x Junction Box Electronics

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1
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X14270 (47 pin) Wiring Harness
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2
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X4010 (23 pin) Power Distribution Box
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3
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X14271 (54 pin) Wiring Harness
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4
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X14272 (54 pin) Instrumentation
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E9x Power Distribution Box

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| E9X Distribution Box Interface | |
| 1 | Wiring Harness Connector |
| 2 | Horn Relay soldered to the circuit board |
| 3 | Terminal 30 Relay soldered to the circuit board |
| 4 | Terminal 15 Relay soldered to the circuit board |
| 5 | Terminal 30g |
| 6 | Power Supply |
| 7 | Windshield Washer Relay |
| 8 | Secondary Air Pump Relay |
| 9 | Interface Connector to Junction Box Electronics |
| 10 | Rear Window Wiper Relay |
| 11 | Rear Window Defogger Relay |
| 12 | Wiper Stage 1 Relay |
| 13 | Wiper Stage 2 Relay soldered to the circuit board |

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Pin #
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Function
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1
|
Secondary Air Pump Activation (switched ground)
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2
|
not used
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3
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Terminal 87, DME Secondary Air Pump
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4
|
Fuel Pump Activation (switched ground)
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5
|
Activation Terminal 15 (Pos)
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6
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Activation Terminal 30g (Gnd)
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7
|
Ground |
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8
|
not used
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|
9
|
Working current, wiper stage 1
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10
|
Working current, wiper stage 2
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Wire Size (mm2)
|
Aprox. AWG equivalent
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|
0.35
|
20
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0.50
|
18
|
|
0.75
|
16-17
|
|
1.0
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15-16
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|
2.5
|
11-12
|
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KL 0
|
Ignition off
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KL R
|
Ignition Accessory
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KL 15
|
Ignition On/Run
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KL 30
|
Constant
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