MISCELLANEOUS 
MISCELLANEOUS LOCATION 
CONNECTORS 
CONNECTORS LOCATION 
Parking Brake SwitchOn parking brake support bracket.
Passenger's Seat Belt SwitchIn passenger's seat belt buckle.
Release Switch (BAS)Integral to brake booster.
Right Front Seat Belt Buckle SwitchIn passenger's seat belt buckle.
Rotary Tumbler Trunk Lid MicroswitchPart of tailgate latch assembly.
Stoplight SwitchOn brake pedal support.
ComponentComponent Location
Alarm HornIn left rear corner of engine compartment.
Alarm Siren W/ Auxiliary BatteryIn left rear corner of engine compartment.
Antenna Coil (Left)At left side of rear window, behind trim.
Antenna Coil (Right)At right side of rear window, behind trim.
Antenna SplitterOn right side of liftgate.
Audio AmplifierBehind left side of dash.
Blower Motor Preresistor GroupUnder right side of dash, in blower assembly.
Data Link Connector (DLC)Below left side of dash.
Diagnostic Module (OBD II) Scan Tool ConnectorBelow left side of dash.
Driver's ETR SquibOn base of left "B" pillar, behind trim.
FM/AM AmplifierIn liftgate, behind trim.
Front Passenger ETR SquibOn base of right "B" pillar, behind trim.
Garage Door TransmitterOn front center of roof.
Hands-Free MicrophoneOn front center of roof.
Low Beam Headlight Relay Shorting ClipIn left side of engine compartment, in fuse & relay 
box.
Recirculated Air Flap ElementBehind right side of dash.
Transponder CoilTop right side of steering column, on ignition 
switch.
ComponentComponent Location
X2/4 (Black, 2-Pin)Behind radio.
X11/4 (Black, 16-Pin)Below left side of dash.
X18 (Red, 28-Pin)Behind center of dash.
X18/1 (Black, 9-Pin)Under tailgate trim.
X18/A_B (Black, 16-Pin)At right kick panel.
X18/2 (1) (White, 10-Pin)At left rear of engine compartment.
X18/2 (2) (4-Pin)At left rear of engine compartment, in E-box.
 
2001 Mercedes-Benz ML320 
2001 MERCEDES-BENZ ML320 & ML430  
me  
Saturday, October 02, 2010 3:21:17 PMPage 6 © 2006 Mitchell Repair Information Company, LLC.  
REMOVAL & INSTALLATION 
INSTALL AUXILIARY WIRING HARNESS - SM83.30-P-0009GH 
MODEL 163.154 #A up to 289564, 163.154 #X, 163.136 /172 with CODE (580) Air conditioning (or 
Tempmatic for USA)  
Fig. 188: Identifying Auxiliary Wiring Harness Location
 
Operation no. of operation texts or standard texts and flat rates 
CategoryOp. 
no.Operation textTimeAcc. 
no.Code
P023731INSTALLING MODIFIED WIRING HARNESS FOR 
Additional fan (AFTER CHECKING)015WU/1.3h--
 Removing  
1Disconnect battery ground 
cable AR54.10-P-
0003A 
   *BA54.10-
P-1017-01C
2Remove rear cover from 
fuse and relay module (F1) 5 screws. 
3
Remove mounting screws of 
fuse holder on fuse and relay 
module (F1) and lay down to 
  
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:19 PMPage 231 © 2006 Mitchell Repair Information Company, LLC.  
 Battery 
Parts ordering notes 
14
(2) into plug location 1 of 
connector (ML/B) and close 
connector housing.in connector.
 
15
Insert blue connector 
(ML/B) at bottom of fuse 
holder and fasten auxiliary 
wiring harness (2) to 
separated lead with adhesive 
tape
 Ensure that stripped wire ends are insulated with 
adhesive tape. 
16
Fasten fuse holder to fuse 
and relay module with 
screws
  
17Insert new 40 A fuse at 
position f44 in fuse holder The larger line diameter of the auxiliary wiring 
harness (2) allows installation of a 40 A fuse. 
18Install in the reverse order  
19Check function of additional 
fan  
NumberDesignationModel 163
BA54.10-P-1017-01CNut, ground cable to bodyNm18
Part no.DesignationQuantity
163 540 00 35Auxiliary wiring harness1
910153 000000Fuse, 40 A1
 
2001 Mercedes-Benz ML320 
1998-2005 HVAC Climate Control - 163 Chassis  
me  
Saturday, October 02, 2010 3:23:19 PMPage 233 © 2006 Mitchell Repair Information Company, LLC.