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I believe it is BMW part # 83300413585, available via Max BMW for $16.72 plus shipping:
Thank you @wspollack, this is really helpful and them some. I appreciate all your help .I believe it is BMW part # 83300413585, available via Max BMW for $16.72 plus shipping:
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I'm assuming a few things in order to make that assertion:
1) The BMW engineers and bean counters saw fit to use existing parts, when they could, on the CE-04.
2) That the plug in the pic you posted has had a line cut off, i.e., it looks like it has two wires, and the shadows of two wires, emanating from the back of the plug (while the part I mention has three wires).
3) The part I referenced has a ground, 12V power, and c. 8V power. As the description at Max notes:
Function: 3-pin for LED of anti-theft alarm, optional-accessories plug (device end). Can-bus plug that allows you to splice to a GPS power cord and connect to switched power on your Can-bus model. Middle not used, RH wire is power, LH wire is ground.
I used what is referred to around the forum -- particularly in the C 400 section -- as the GPS (or sat nav) plug, on my former '22 C 400 GT and on my current '23 C 400 GT, in both cases to power Skene Photon Booster LEDs.
In the first instance, Jan. 2023, I purchased it via eBay, on a page that's since been changed a little: https://www.ebay.com/itm/364042531174
The second round, Oct. 2024, I used a cheaper listing: https://www.ebay.com/itm/325296417676
I forget whether it was in stock at Max a year or two back, but that second listing is still there, and still cheaper.
I have a pic of that first product from eBay, which includes the BMW part number on it, in my C 400 GT, in this particular image and caption:
'22 & '23 BMW C 400 GT
billanddot.com
You'll note in that caption that I was steered in that direction by a few folks in this thread: https://www.bmw-scooters.com/index.php?threads/garmin-zumo-xt.2599/
Later on in my gallery, in this image and caption, I show which wires are which:
'22 & '23 BMW C 400 GT
billanddot.com
Here's the gist, at least on the C 400 bikes: if you consider the pins as an isosceles triangle -- looking at the back of the plug, where the wires come out -- the right base is hot, the left base is ground, and the apex is what the description at Max calls "not used." I can't tell from the pic you presented whether that's the case there.
BTW, I don't know whether that's your pic or one you lifted from somewhere, but I, too, am a big fan of Wago clamp connectors. You can see that I used them when connecting that plug, too (see https://billanddot.com/C400GT/#S-92 ).
Oh, one last thing: on the C 400 GT, that plug is powered for 60 seconds after the engine is turned off. That might or might not be the case on the CE-04, too, and you might or might not care ... but I thought I'd point it out for completeness.
Good luck on your project.