Wiring For MAF Conversion on
E34 535i BMW using PSC1-004
5/15/02
DME
PSC1-004
ARM1
GRAY/YELLOW (7)
BLACK (6)
DME WIRING HARNESS
WHIT
E
GRAY/RED
GRAY/RED
AT ASH TRAY
SWITCHES TO
+12V WHEN
DASH LIGHTS
ARE ON
GR
A
Y
VI
OL
ET
GREEN
BLACK
BL
A
C
K
BLACK
RED
RED
RED
BLACK
BROWN
GREEN
ORANGE
ORANGE
TO SWITCHED +12V
POWER DME pin 37
TO SIGNAL GROUND
GREY/BLUE
DME pin 26
RED
BL
A
C
K
MAF
SENSOR
TO OXYGEN
SENSOR
ORANGE
MAF C
O
NV
ERS
ION
WIRING HA
RNESS
BUTT SPLICE CONNECTOR
IN-LINE CONNECTOR
INSTANT SPLICE CONNECTOR
RING CRIMP CONNECTOR
BL
A
C
K
RED/BLUE
THROUGH
FIREWALL
*
*
*
NOTE: IN-LINE CONNECTORS
MUST BE DISCONNECTED IF THE
STOCK AIR FLOW METER IS
RECONNECTED
AIR TEMP SENSOR
Option: Use IAT1
Instead of the PSC1
GRAY wire
GRAY/VIOLET (44)
GRAY/BLUE (26)
Y
E
LLO
W/
BLA
C
K
( ) Indicates DME pin number
To DME
Pin 28
(shielded)
BROWN
To OXYGEN
SENSOR
GREY WIRE
DME pin 10