Originally Posted by 07ultra
the reason you disconnect the neg post first on a car is so if your wrench hits the frame on the pos side it won't spark
I'd also say that if your switch requires a tool to operate, put the switch on the ground.
The cutoff in my trailer is on the positive side.
I have cutoffs in all my cars and trucks that sit. That cutoff is always on the negative side of the battery.
Also, I might recall that the pos and neg terminals on a battery are different sizes. So, when you use that plain old cutoff with the green screw knob, it only fits on the negative terminal. But, I could be mistaken...
2014 Silverado 2500 6.6L TD and 4X4
2011 Carson Standard Duty Car Hauler
2012 Forest River Stealth SK2112