[ratdude747]

Originally Posted by techhelpbb

When you split a terminated bus like this you create the probability of reflections. If you look up a tool called TDR:
https://en.wikipedia.org/wiki/Time-domain_reflectometer

It is not recommended to do this.
Certain patterns of communication traffic might become garbled.
Resulting in intermittent errors you can't see a cause for.

Leaving an end unterminated is actually worse, as well would be using the wrong value terminators.

QFT. Any time termination matters (such as CAN), you've entered the wonderful world of RF where reflections and the like are real. In RF you get to throw away everything you know about electricity and circuits, aside from Kirchoff's laws. Ohm's law? Kiss it goodbye, it doesn't apply any more. Wire spacing and twist rate do matter a ton.

Generally RF rules apply if you're at high frequency (such as CAN, ethernet, or Wifi/Bluetooth) or you're over a massively long distance (such as a 10 mile power transmission line).

TLDR: Don't branch CAN wires, while it seems like it will work in reality it's asking for trouble.