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.
Contact | Meaning | Old terminal designation[1] | |
---|---|---|---|
Ignition system | |||
1 | ignition coil, distributor, low voltage | ||
1a, 1b | distributor with two separate circuits | ||
2 | breaker points magneto ignition | ||
4 | coil, distributor, high voltage | ||
4a, 4b | distributor with two separate circuits, high voltage | ||
7 | terminal on ballast resistor, to distributor | ||
15 | battery+ from ignition switch | 16 | |
15a | from ballast resistor to coil and starter motor | 16 | |
15e | battery+ from ignition switch, also when starter motor runs | ||
Preheat (Diesel engines) | |||
15 | preheat in | + | |
17 | start | ||
19 | preheat (glow) | ||
Starter | |||
45 | starter relay | 30f, 30h | |
45a | starter 1 output | 30h, 30h I | |
45b | starter 2 output | 30h II | |
50 | starter control | ||
50a | starter control | ||
50b | starter control | 50 | |
50c | starter control | 50 II | |
50d | starter control | 50b, 50k | |
50e | starter control | 50a | |
50f | starter control | 50 | |
50g | starter control | 50a | |
50h | starter control | 50 | |
Battery | |||
15 | battery+ through ignition switch | 16, 54/15 | |
30 | from battery+ direct | 30/51 | |
30a | from 2nd battery and 12/24 V relay | ||
31 | return to battery- or direct to ground | ||
31a | return to battery- 12/24 V relay | ||
31b | return to battery- or ground through switch | 85d | |
31c | return to battery- 12/24 V relay | 31, 31a | |
Electric motors | |||
32 | return | 31 | |
33 | main terminal (swap of 32 and 33 is possible) | 30 | |
33a | limit | ||
33b | field | 54e | |
33f | 2. slow rpm | ||
33g | 3. slow rpm | ||
33h | 4. slow rpm | ||
33L | rotation left | 30L | |
33R | rotation right | 30R | |
Indicators | |||
49 | flasher unit in | 15, 15+, 15/54, +, +15, X | |
49a | flasher unit out, indicator switch in | 54L, S, S4, L | |
49b | out 2. flasher circuit | ||
49c | out 3. flasher circuit | ||
C | 1st flasher indicator light | K, K1, P | |
C2 | 2nd flasher indicator light | K1, K2, K3, K4 | |
C3 | 3rd flasher indicator light | K3, K4 | |
L | indicator lights left | HL, L54, VL | |
R | indicator lights right | HR, R54, VR | |
L54 | lights out, left | SBL | |
R54 | lights out, right | SBR | |
AC generator | |||
51 | DC at rectifiers | ||
51e | as 51, with choke coil | ||
59 | AC out, rectifier in, light switch | 51, 51-, 51a | |
59a | charge, rotor out | 59 | |
64 | generator control light | ||
Generator, voltage regulator | |||
61 | charge indicator (charge control light) | ||
B+ | battery + | 51, 51B+, B+30, B+51 | |
B- | battery - | 31B- | |
D+ | dynamo/alternator diode+ | ||
D- | dynamo/alternator diode- | ||
DF | dynamo field | ||
DF1 | dynamo field 1 | ||
DF2 | dynamo field 2 | ||
U, V, W | AC three phase terminals | ||
Lights | |||
54 | brake lights | ||
54g | lights | 54 | |
55 | fog light | N | |
56 | spot light | ||
56a | headlamp high beam and indicator light | ||
56b | low beam | F | |
56d | signal flash | ||
57 | parking lights | ||
57a | parking lights | P | |
57L | parking lights left | PL | |
57R | parking lights right | PR | |
58 | licence plate lights, instrument panel | ||
58d | panel light dimmer | 58b | |
58L | parking light | 58 | |
58R | parking light | 58 | |
Window wiper/washer | |||
53 | wiper motor + in | 1, 3, 54d, S | |
53a | limit stop + | 54, +2 | |
53b | limit stop field | 3, 54e | |
53c | washer pump | ||
53e | stop field | 1, 2 | |
53i | wiper motor with permanent magnet, third brush for high speed | ||
Acoustic warning | |||
71 | beeper in | H | |
71a | beeper out, low | ||
71b | beeper out, high | ||
72 | hazard lights switch | ||
85c | hazard sound on | ||
Switches | |||
81 | opener | ||
81a | 1 out | ||
81b | 2 out | ||
82 | lock in | ||
82a | 1st out | ||
82b | 2nd out | ||
82z | 1st in | ||
82y | 2nd in | ||
83 | multi position switch, in | ||
83a | out position 1 | ||
83b | out position 2 | ||
Relay | |||
85 | relay coil - | Important if relay coil has flyback diode in parallel | |
86 | relay coil + | Important if relay coil has diode in parallel | |
Relay contacts | |||
87 | common contact | 30/51 | |
87a | normally closed contact | ||
87b | normally open contact | ||
88 | common contact 2 | 30/51 (relay) | |
88a | normally closed contact 2 | ||
88b | normally open contact 2 | ||
Additional | |||
52 | signal from trailer | ||
54g | magnetic valves for trailer brakes | ||
75 | radio, cigarette lighter | R | |
77 | door valves control |
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.