How To Connect Battery Terminals In Car. When disconnecting the cables from the old battery disconnect the negative first then the positive. Clean both battery posts with a wire brush.
If you dont have baking soda you can use 100-grit sandpaper to get the same result. Use solder wire to fill out the screw hole in a battery post if the hole is too large. Look for the car battery terminals.
Clamp the other end of the positive cable to the positive terminal of the good battery.
Similarly connect the negative connector that is marked with black on the negative battery terminal on your power inverter. Connect the black terminal to a metal frame for grounding. If it does not start at the first attempt make more attempts. Mount the ground wire connector with the inverters grounding terminal.
