DIN 72552
DIN 72552 is a DIN standard for automobile electric terminals, standardizing almost every contact in an automobile with a code.
This table gives most frequently used codes.
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 |
Turn indicators | ||
49 | flasher unit in | 15, 15+, 15/54, +, +15 |
49a | flasher unit out, indicator switch in | 54L, S, S4 |
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 |
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
- DIN 72552: Klemmenbezeichnungen in Kraftfahrzeugen (Blatt 1, 2, 3, 4). DIN. 1971. pp. 1–23.
- bosch-classic.com
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