I have a copy of the Clymer manual for our K-bikes with the very handy wiring diagram in the back. I have a background in aviation and have read my share of electrical schematics, but the formatting is quite different. I've been able to figure most of it out except for one thing.



The junction circled in blue is clearly a ground point, but what about the one circled in red? Is that supposed to be +12VDC? The diagrams I'm familiar go from battery to fuse block/circuit breaker then whatever comes after that, this is a different animal.
I'm sure I'm over-complicating it, but if someone could point me in the right direction I'd appreciate it.
Thank you.

It is just a point where the eth wires are joined but not earthed at that point.

Rick G wrote:It is just a point where the eth wires are joined but not earthed at that point.

I sorta figured it was something like that, I'm just trying to visualize that in an actual installation. That should mean that one of the wires likely comes from a fuse (or maybe a computer module) and that's the source of the power, now I just have to rewire my brain to forget what I'm accustomed to and get used to something new...not as easy for this old dog as it used to be.

Thanks for the reply!

We call it a splice, we have many in our busses
Indeed this diagram is totally different from what the rest of automotive use, or aviation, but easy to follow for people who know only a little of electrics.
Another thing is the later SLP, another type of diagram.

IMO it's really poor way of showing a wire junction. Back in my analogue design days the one thing that was hammered into me repeatedly when designing circuits was never show a wiring join as a cross. Always clearly stagger it because when it is copied (and a copy made of the copy and a copy made of the copy of the copy....) that way you could be sure that a blob that suddenly appears on two crossed wires at some point in the copycopycopy process is not a join.

Slap on the wrist, Mr. BMW Wiring Loom Designer.

As for aviation wiring harnesses... why is every damn wire white????

In truth though things may have changed since I was crawling around in SD-360s, Q400s and LearJet 35s thirty-odd years ago.