my first mistake is probably having 2 sources of wiring diagrams.......one from fergy's place and the other from slot car corner.
on fergys one the negative wire from power goes straight to the dpdt switch
using third diagram just with dpdt switch

now on the SCC wiring diagram it has the negative power split with 1 connection going to the dpdt switch and the other going directly to the red wire on the controller
why is there a difference, and which is more correct.
i suppose they could both work(im no electrician), but why the difference
thanks

















