| 1986-93 Mercedes 300 Series Alarm, Remote
Starter, Keyless Entry Wiring Information |
| Constant 12V+ |
Red |
Ignition Switch Harness |
| Starter |
Purple/White or Purple |
Ignition Switch Harness or from Console |
| Ignition |
Pink/Red or Pink/Black |
Ignition Switch Harness |
| Ignition 2 |
Pink/Yellow |
Ignition Switch Harness, Accessory 2 |
| Accessory |
Pink/Green |
Ignition Switch Harness |
| Tach |
Black |
Or Gray/Yellow (-) At Coil left inner fender |
| Brake Switch |
Black/Red |
Brake Switch |
| Trunk Pin |
Black/Yellow (-) |
OEM Alarm Module Passenger's FootWall |
| Parking Lights |
Gray/White L |
And Gray R at Light Switch |
| Head Lamp |
White/Yellow |
Light Switch |
| Hood Pin |
Brown/Red (-) |
OEM Alarm Module Passenger's FootWall |
| Factory Disarm |
Green/Yellow (-) |
OEM Alarm or Driver's Kick Panel |
| Door Trigger |
Brown/ (-)F |
,Brown/ (-)R at OEM Alarm right FootWall |
| Door Lock |
Green or Blue |
Driver's Kick or Pump under Rear Seat |
| Door Unlock |
Green or Blue |
Vacuum Door Lock System |
| Horn Wire |
Black/Yellow (-) |
Steering Column |
| Windows Up |
LF=Green, RF= Black/White |
| Windows Down |
LF=Black/Pink, RF= Black |
| 1986-93 Mercedes 300 Series Stereo Wiring |
| Constant 12V+ |
Red/White |
| Switched 12V+ |
Black/Yellow |
| Ground |
Brown |
| Illumination |
Purple/Gray |
| Dimmer |
n/a |
| Antenna Trigger |
White |
| Antenna |
Left Rear |
| Front Speakers |
4" Dash |
| Left Front (+) |
Yellow |
| Left Front (-) |
Black |
| Right Front (+) |
White |
| Right Front (-) |
Black |
| Rear Speakers |
5 1/4" Rear Deck |
| Left Rear (+) |
Red |
| Left Rear (-) |
Black |
| Right Rear (+) |
Green |
| Right Rear (-) |
Black |