Ok I have 2 different voltages in my robot 18v and 12v.
I want to only use 1 link for my robot so I am using negative as ground.
I put the 2 battery's GND together than have a link and the the wires leading to the sabertooth and the electronize.
When the link isn't in the sabertooth lights up, but shows error.
The motor running on the electronize spins very slowly.
I think something has gone (majorly) wrong.
What should I do?