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Johnny Montana 12-27-2012 06:13 PM

Searching for 2001 740I Windshield Wiper relay wiring schematic
Hello everyone,

I've got my 740I apart. My wiper relay plug & wires had the typical corrosion problem.

The four large wires are in good shape and still attached to the terminals.......but the two small wires are broken off from their terminals.

Before I can wrap up this project I really need to know which small wire goes where......I don't want to risk any damage by hooking them up the wrong way (guessing)

With the relay removed the plug terminals are boldly numbered. The two terminals in question are terminal #1 and terminal #3

Can anyone tell me where to find the specific wiring diagram/schematic to figure this out?

I've searched all over but haven't found what I need.

Thank you in advance for any help. :thumbup:

Johnny Montana

joyism5 12-27-2012 07:24 PM

It used to be a nice site bmw spaghetti decoder...but I can't find it anymore. Maybe not available. Try this: maybe he has a repair somewhere.
Best wiring diagrams are in Mitchell onDemand (autosoftware). But this is a little bit tricky to install.
Maybe post#7 will help you a bit:
Good Luck!

Johnny Montana 12-28-2012 11:54 AM


Meeknet didn't have the info I'm looking for.

It's possible the #7 post you sent me to has the info.....but I can't get the first photo (on far left) to open large enough to read the lettering......I tried saving the photo to my computer and opening it in the photo software but it pixelates when I try to zoom.

Do you have a better file of that schematic photo?


joyism5 12-28-2012 04:12 PM

Post 7 has the wiper motor connector relay, post 8 has the complete diagram. I don't have the pictures anymore, I'll try to download them.

joyism5 12-28-2012 04:16 PM

5 Attachment(s)
Here there are.

Johnny Montana 12-28-2012 06:13 PM


I didn't realize before that the 4 photo files are #1 (the original) and #2,#3, and #4 = up close views of the original. Once I figured that out it was pretty easy to read the wire color schematics.

However, I think we are looking at the wrong schematics for my 2001 car only has one large wiper relay (the big tan colored one)......the schematics you posted show relay #1 and relay #2......which I think is for mid 1998 production and earlier 740's....

Does anyone have the wiring diagrams for a single relay windshield wiper system on my 2001 740I ?


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