I was hooking up an aftermarket intermittent wiper timer this weekend.
No problem hooking it up but I got to wondering while looking at the switch;
What do the numbers on the spade terminals of switches represent?
For instance, 53, 31b etc.
I also noticed numbers when resoldering relays, ie 85, 87/2, 86/1, 30 etc.
The numbers are obviously there for some reason, but what?
Is this some type of electrical code?
Just wondering on a cold NE day.
Any ideas?
--
'60 544, '68 220S, '70 145S, '72 144E, '86 745T

Google searched "Bosch DIN" and came up with:
http://66.34.72.138/wiring/defs.html
That seems like a good list, not as long or as complete as others I've found, but can't remember where right now.
Shayne.

Try http://www.type2.com/library/electrip/bosterm.htm.
Bob S.

PS: Well that doesn't seem to work anymore, at least, not for me. So, go to http://www.type2/com, scroll down the left side to "Library", click on "Bosch Terminal Designations" under B, and click on that title under "General". If the weather stays as cold and windy where you are as it is here, you can just go ahead, stay next to the stove for a couple of days, and memorize the whole thing ;-)
Bob

Thanks Bob.
I guess there is a method to the madness. Don't think I'll memorize it though!
Not sure how / if this will ever help in the future, but it does answer the question.
Hope the weather warms soon too, the cold weekends are not conducive to playing in the garage.
--
'60 544, '68 220S, '70 145S, '72 144E, '86 745T

Re: /. That was a trip of the finger. Never caught it when I re-read the post. Good thing people on here can work their way around my errors.
Bob S. ;-)

I think the final slash makes a difference, as below:

http://www.type2.com/

I'll try to make it a link here.
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.

Those are standard codes Bosch uses to refer to the circuit that the relay or switch is intended for.

Keep in mind that some relays get used for other purposes after they're designed and can have the same markings for two different purposes- but the idea is that the numbers correspond to Bosch's wiring standards.

Started with the Volkswagens in the late 40's and 50's. Volvo chose to use Bosch as their supplier for most of their models, so you find the same wiring schemes used.

And yeah, I can't remember what they all mean either.
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Rob Bareiss, New London CT ::: 87 244DL- 249K, 88 245DL- 181K, 84 242DL, 89 244DL parts, SOLD: 86 244, 88 244GL, 87 244, 91 244, 82 245T, 88 744GLE, 86 244

There is rhyme or reason to the codes and there is a website that has
an interpretation of them but right now I can't remember where the site
is and can't lay hands on the printout I made either....
Sorry,
--
George Downs Bartlesville, Heart of the USA!

Yes, they used to pass this stuff out in Volvo school as well and it is quite handy to have around. Off the top of my head you have #30 (main battery feed) 15 ground, 86 and I think 87 are current out to consumers. That is one nice thing about the Bosch relays is that the schematic is right on the side of them so you can swap them for another relay that is wired the same or you can use it to fault trace a circuit.

Mark