DIN 72552

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VAG car relay VAG car relay.jpg
VAG car relay

DIN 72552 is a DIN standard for labeling the electric terminals in automotive wiring. The most frequently used labels are listed in the table below.

ContactMeaningOld terminal designation [1]
Ignition system
1 ignition coil, distributor, low voltage
1a, 1bdistributor with two separate circuits
2breaker points magneto ignition
4coil, distributor, high voltage
4a, 4bdistributor with two separate circuits, high voltage
7terminal on ballast resistor, to distributor
15 battery+ from ignition switch16
15afrom ballast resistor to coil and starter motor16
15e battery+ from ignition switch, also when starter motor runs
Preheat (Diesel engines)
15preheat in+
17start
19preheat (glow)
Starter
45starter relay30f, 30h
45astarter 1 output30h, 30h I
45bstarter 2 output30h II
50starter control
50astarter control
50bstarter control50
50cstarter control50 II
50dstarter control50b, 50k
50estarter control50a
50fstarter control50
50gstarter control50a
50hstarter control50
Battery
15battery+ through ignition switch16, 54/15
30from battery+ direct30/51
30afrom 2nd battery and 12/24 V relay
31return to battery- or direct to ground
31areturn to battery- 12/24 V relay
31breturn to battery- or ground through switch85d
31creturn to battery- 12/24 V relay31, 31a
Electric motors
32return31
33main terminal (swap of 32 and 33 is possible)30
33alimit
33bfield54e
33f2. slow rpm
33g3. slow rpm
33h4. slow rpm
33Lrotation left30L
33Rrotation right30R
Indicators
49flasher unit in15, 15+, 15/54, +, +15, X
49aflasher unit out, indicator switch in54L, S, S4, L
49bout 2. flasher circuit
49cout 3. flasher circuit
C1st flasher indicator lightK, K1, P
C22nd flasher indicator lightK1, K2, K3, K4
C33rd flasher indicator lightK3, K4
Lindicator lights leftHL, L54, VL
Rindicator lights rightHR, R54, VR
L54lights out, leftSBL
R54lights out, rightSBR
AC generator
51 DC at rectifiers
51eas 51, with choke coil
59AC out, rectifier in, light switch51, 51-, 51a
59acharge, rotor out59
64generator control light
Generator, voltage regulator
61charge indicator (charge control light)
B+battery +51, 51B+, B+30, B+51
B-battery -31B-
D+ dynamo/alternator diode+
D-dynamo/alternator diode-
DFdynamo field
DF1dynamo field 1
DF2dynamo field 2
U, V, WAC three phase terminals
Lights
54 brake lights
54glights54
55fog lightN
56spot light
56a headlamp high beam and indicator light
56blow beamF
56dsignal flash
57parking lights
57aparking lightsP
57Lparking lights leftPL
57Rparking lights rightPR
58licence plate lights, instrument panel
58dpanel light dimmer58b
58Lparking light58
58Rparking light58
Window wiper/washer
53wiper motor + in1, 3, 54d, S
53alimit stop +54, +2
53blimit stop field3, 54e
53cwasher pump
53estop field1, 2
53iwiper motor with permanent magnet, third brush for high speed
Acoustic warning
71 beeper inH
71abeeper out, low
71bbeeper out, high
72hazard lights switch
85chazard sound on
Switches
81opener
81a1 out
81b2 out
82lock in
82a1st out
82b2nd out
82z1st in
82y2nd in
83multi position switch, in
83aout position 1
83bout position 2
Relay
85relay coil -Important if relay coil has flyback diode in parallel
86relay coil +Important if relay coil has diode in parallel
Relay contacts
87common contact30/51
87anormally closed contact
87bnormally open contact
88common contact 230/51 (relay)
88anormally closed contact 2
88bnormally open contact 2
Additional
52signal from trailer
54gmagnetic valves for trailer brakes
75radio, cigarette lighterR
77door valves control

EN 50005

A different standard, European Norm (EN) 50005 recommends terminal numbering for general application relays (e.g. 11/12/14/A1/A2 for a SPDT relay) that may nevertheless be applied to automobiles.

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References

  1. "vintagebus.com". Archived from the original on 2016-09-19. Retrieved 2016-10-20.