200 Quattro 20V Sedan L5-2226cc 2.22L DOHC Turbo (3B) (1991)
8-PIN MODULAR CONNECTOR ON HANDSET, TERMINAL IDENTIFICATION
1 -
Handset logic ground (-), blue (to terminal 23 on 25-pin connector)
2 -
Regulated 9.6 V (+), red (to terminal 8 on 25-pin connector)
3 -
T-data communication line, purple (to terminal 11 on 25-pin connector)
4 -
C-data communication line, orange (to terminal 12 on 25- pin connector)
5 -
R-data communication line, yellow (to terminal 18 on 25- pin connector)
6 -
Handset audio ground (-), brown (to terminal 24 on 25-pin connector)
7 -
On/Off function, transmit audio, green, (to terminal 1 on 25-pin connector)
8 -
Receive audio, white, (to terminal 6 on 25-pin connector)
25-PIN CONNECTOR TO TRANSCEIVER, TERMINAL IDENTIFICATION
CAUTION
DO NOT damage, enlarge or bend connector pins or cavities by forcing probes into them when performing electrical checks.
Illustration identifies the 25-pin connector as it appears on the wiring harness.
1 -
On/Off function, transmit audio (to terminal 7, green, on handset)
2 -
Mobile/transportable select line
3 -
Ground (GND) (black wire)
^
one of two Grounds required for proper operation. Other Ground is at pin 17
4 -
Plus connection (B+), terminal 30 (red wire)
^
one of two B+ connections required for proper operation. Other B+ connection is at pin 16
5 -
Plus connection (B+) terminal 15, ignition sense lead (green/black wire)
6 -
Receiver audio to handset (to terminal 8, white,on handset)
7 -
Configuration (not applicable)
8 -
Regulated +9.6V (to terminal 2, red, on handset)
9 -
Power antenna (B+) feed (not applicable)
10 -
Radio mute signal (yellow/black wire)
11 -
T-data communication line (to terminal 3 purple on handset)
12 -
C-data communication line (to terminal 4, orange, on handset)
13 -
Open
14 -
Transmit audio shield, to hands-free microphone
15 -
Transmit audio, to hands-free microphone