2. 1 .3
Circuit Schematic of Changeover Module and Adapter Lead
Open out fold-out page! (Page 2-67)
Changeover module
A*
Adapter lead
B*
2-pin black pin housing to 2-pin black socket housing X5* (without on-board monitor radio)
X1*
2-pin black pin housing to 2-pin black socket housing X7* (with on-board monitor radio)
X1*
3-pin black pin housing (only required for retrofit navigation otherwise tie back)
X2*
1-pin socket contact to unplugged pin contact at PIN 28 of black 8-pin speaker connector X18196,
X3*
front left on LHD vehicles or X18198, front right on RHD vehicles
1-pin socket contact to unplugged pin contact at PIN 29 of black 8-pin speaker connector X18196,
X4*
front left on LHD vehicles or X18198, front right on RHD vehicles
2-pin black socket housing to 2-pin black pin housing X1* (without on-board monitor radio)
X5*
2-pin black socket housing with connected contacts from changeover module A is tied back
X5*
(with on-board monitor radio)
2-pin black pin housing to 2-pin black socket housing X8* (with on-board monitor radio)
X6*
2-pin black socket housing to 2-pin black pin housing X1* (with on-board monitor radio)
X7*
2-pin black socket housing to 2-pin black pin housing X6*
X8*
Ground terminal point, footwell on driver's side LHD
X173
Ground terminal point, footwell on driver's side RHD
X173
X1963 3-pin yellow plug connection, telephone speaker before production date 9/98
X1963 3-pin bordeaux plug connection, telephone speaker from production date 9/98
X18126 Black 17-pin radio plug connector
X18126 Black 17-pin on-board monitor radio plug connector
X18196 Black 8-pin speaker connector on driver's side LHD
X18198 Black 8-pin speaker connector on driver's side RHD
1) Coding loop, blue wire
(not changed)
2) Coding loop, white wire
Coding loop closed:
Telephone call mutes radio
Coding loop open:
Telephone call does not mute radio.
The items marked with * refer only to this circuit schematic, all other items correspond to the BMW Service
schematics.
Wire colours:
bl = blue
ge = yellow
rt = red
gn = green
br = brown
ws = white
sw = black
EN 2-61