I guess I didn’t understand your question about the bus bar. I thought you were referring to the main bus bar in your fuse panel. The twisted pair I made is actually a pretty common trick for this device. Lots of RV’ers have done it and it works great. I’ve done this twice now for the various RV’s I’ve owned. The point of presenting it in my article is that it’s a viable option for those with limited funds. Not everyone knows about it.