Theres considerable controversy over whether its best to hook up the master shutoff kill switch to the batterys positive or negative side. Bob joyce krull.
Viewing A Thread Jd 40 Series 12v Battery Conversion And
Battery disconnect switch positive or negative. To disconnect the switch use a wrench to loosen the nuts then unplug the switch on the negative side. All battery disconnect switches add additional exposed area to the terminal it is connected to. Insert the ⅜ inch hole into the terminal and then attach the battery wire to the other end. This additional surface area can more. My battery disconnect on the positive side only kills the light fridge and furnace. The reason for this is because as soon as you disconnect the negative terminal there is no way you can accidentally short the battery when removing the positive terminal.
The battery terminal to be disconnected first depends on the terminal that is earthed or attached to the cars bodywhen a car is negatively earthed then it is prudent to take off the negative terminal first and connect it last. When the switch is off the alternator is de energized too. To connect the switch disconnect the wire on the negative terminal of your battery. You may want to buy a new post clamp. Insert the screws and tighten them securely with a wrench. Whether it be a top post or side post disconnect switch.
Nhra rules still mandate a positive side hookup. Assuming a negative ground car disconnect the existing wire from the battery negative post and remove the post clamp from the wire. Battery disconnect switchpositive or negative here is the heartland engineering drawing showing how they wire the disconect switch from the factory. The important things to note is that when the switch is off the truck can still charge the battery and most importantly the breakaway switch will still work. Still have lots of parasitic drain probably from 1 or both of the 2 other positive battery cables. Take the switch connection directly to the post.
Better quality ones have built in terminals for the alternator wire that are separate from the battery cable terminals. The other wire from the switch should be properly connected to the original negative wire. When you remove a battery from a car you should always disconnect the negative terminal first and then the positive. Can i add a battery cut off switch to the negative side and kill everything or is that not recommended with certain components like levelers and slideouts. Marine battery disconnect switches are intended for the positive side.
Gallery of Battery Disconnect Switch Positive Or Negative
