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Difficulty
Credit
evilution
Mod ID
1098
Cost
For
450 Fortwo 600cc
450 Fortwo 700cc
453 Fortwo and forfour
451 Fortwo 999cc
452 Roadster 700cc
454 Forfour
450 Fortwo 700cc
453 Fortwo and forfour
451 Fortwo 999cc
452 Roadster 700cc
454 Forfour
KL is the abbreviation for 'klemme' which is the German term for connector / connection. The Klemme KL code tells you how a power or earth wire functions on a diagram. Used On Smart Wiring Diagrams KL15 is ignition switched live KL30 is battery permanent live KL31 is battery negative, connected all the time
Not Used On Smart Wiring Diagrams KL50 is ignition position #3 (start) KLR means ignition switch position #1 (accessory)
Ign 1 - KLR
Ign 2 - KL15
Ign 3 - KL50
Smart only use 3 positions unlike many other cars that use 4.
Off
Accessory
Start
Well, to be honest, for you it might not be but I look at smart wiring diagrams every day and I really
needed somewhere I could put this information so I could quickly view it to refresh my memory.
1 Low voltage
4 High voltage
4a From ignition coil I, terminal 4
4b From ignition coil II, terminal 4
15 Switched positive after battery (ignition-switch output)
15a Output at the series resistor to the ignition coil and to the starter
17 Start
19 Preglow
Battery
30 Line from battery positive terminal (direct)
30a Battery changeover 12/24 V Line from battery II positive terminal
31 Return wire from battery negative or ground (direct)
31b Return wire to battery negative or ground via switch or relay (switched negative)
Battery changeover relay 12/24 V
31a Return line to battery II negative
31c Return line to battery I negative
32 Return line
33 Main terminal
33a Self-parking
33b Shunt field
33f for second reduced-rpm operation
33g for third reduced-rpm operation
33h for fourth reduced-rpm operation
33L Rotation to left (counterclockwise)
33R Rotation to right (clockwise)
53a Wiper (+), self-parking
53b Wiper (shunt winding)
53c Electric windshield-washer pump
53e Wiper (brake winding)
53i Wiper motor with permanent magnet and third brush for higher speed)
Lighting
55 Fog lamps
56 Headlamps
56a High beam with indicator lamp
56b Low beam (dipped beam)
56d Headlamp-flasher contact
57a Parking lamp
57L Parking lamp, left
57R Parking lamp, right
58 Side-marker, tail, license-plate and instrument lamps
58d Adjustable instrument lighting
58L left
58R right
Alternators and voltage regulators
B+ Battery positive terminal
B– Battery negative terminal
D+ Alternator positive terminal
D– Alternator negative terminal
DF Alternator field winding
DF1 Alternator field winding 1
DF2 Alternator field winding 2
U, V, W Three-phase terminals
Audio systems
75 Radio, cigarette lighter
76 Loudspeaker
Switches
Normally closed contact/changeover contact
81 Input
81a 1st output, NC side
81b 2nd output, NC side
Normally open contact
82 Input
82a 1st output
82b 2nd output
82z 1st input
82y 2nd input
Multiple-position switch
83 Input
83a Output, position 1
83b Output, position 2
83L Output, position left
83R Output, position right
84b Output, relay contact
86a Start of winding / 1st winding
87 Input
87c 3rd output
87z 1st input
