BMW E9x Junction Box Electronics



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

E9x Power Distribution Box


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


Pin #
Function
1
Secondary Air Pump Activation (switched ground)
2
not used
3
Terminal 87, DME Secondary Air Pump
4
Fuel Pump Activation (switched ground)
5
Activation Terminal 15 (Pos)
6
Activation Terminal 30g (Gnd)
7
Ground
8
not used
9
Working current, wiper stage 1
10
Working current, wiper stage 2


Wire Size (mm2)
Aprox. AWG equivalent
0.35
20
0.50
18
0.75
16-17
1.0
15-16
2.5
11-12


KL 0
Ignition off
KL R
Ignition Accessory
KL 15
Ignition On/Run
KL 30
Constant

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