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I am needing to replace a simple four pin relay or two in a car so what do the numbers on the pins mean?...the old ones just say 123 and 5 this one says 86 85 87 and 30 ????
automotive relays
Oct 21, 2019
Last reply: 6 years ago
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85 and 86 is the coil. 30 and 87 are the switch contacts. That's all I know.
Bill
Yup. The old UK BS (or Lucas) numbers.
The travelling contact 30/51. 87 N/O. 87A N/C. (on a 5 pin C/O)
I'm sure there is a logic to them. ;-)
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