Originally Posted by rkm3
So if you buy these connectors, you can use either 4 gauge or 8 gauge? They plug right into the block? Do you need to have the ground off the battery before plugging them in?
The female plug are made for 8g rather than 4g. But you can always "make" it fit.
See attached picture to compare the plug vs 4g wire.
Also keep in mind, the wire runs are fairly short so most installs can get away with 8g.
As for unplugging the gnd before plugging the pos side in , it depends if there is a load on the otherside. But might as well make it a habit and unplug it. From what I observed, you only lose trip meter and mpg calculations with negative terminal disconnected..