Near Intersection of I-35 & I-90 Southern Mn. | hydro70guy - 8/11/2018 23:00
To me the main and simplest reason to connect to the negative side is when connecting or disconnecting batteries I have always and always been told to disconnect negative side first,
Yes and reconnect the negative side last. As I mentioned in my post above be careful to move any direct grounds for add on accessories from the batteries. In my case an electric tarp and auxiliary axle control had been added on after the fact. The installers had wired them directly to the batteries. I needed to move the grounds for those devices to the frame or the frame side of the disconnect switch. If they were still connected directly to the battery they could possibly draw the batteries down which defeats the whole idea. Even worse with the battery disconnect off, if someone tried to start the truck the starter could try to "find" ground through the addon device and likely burn out the rather light ground wire to the add on device.
Some years ago a fellow AgTalker indicated that add on devices generally come with a fuse on their "hot" side. He also put a fuse in on the ground side. Sort of a double protection for situations where a large load item might try to use the light duty item for ground. Probably a good idea although I've never done it. |
Best battery cut off switch for semi?
