The following article shows how to connect a battery isolator. The isolator is installed when the car needs a second battery. This will be required by cars that have bigger stereos. Since more power is needed second battery is added with the help of an isolator.

First of to do this we require a few tools and that includes a battery, a blue ring terminals, a battery isolator, a self tapping screw, needle nosed pliers, wire crimpers, a 12 volt test light , wire cutter finally a few wire strippers and a terminal crimping tool. These tools help us finish the job in a neat and a lot quicker.

Open the front hood and place the secondary battery in its corresponding tray using a 3/8 inch socket and ratchet. Make sure the battery is properly in position and should not be kept tilted. Using a driller mount the battery isolator then connect the terminal of battery isolator to the positive terminal of the battery using a battery cable. The wire connecting the battery and isolator are stripped and held in position using the 3/8 inch ratchet and socket.

A 18 gauge wire run from the ignition terminal on the battery isolator through a grommet in the firewall and the above one is made to run to the steering column on the interior. The wire is probed with the test light and the ignition is turned to the on position then off it. this is done to check the settings. An ignition lead is there when the light turns on when it is on and turns off when it is off. The 18 gauge wire is connected to the ignition wire using a blue Scotchlok connector.

The wire strippers are used to strip inch off the other end of the 18 gauge wire. A ring terminal is crimped on to the end of the wire using the wire crimpers. the wire is connected to the ignition terminal on the battery isolator using a 3/8 inch ratchet and socket.

In the other end of the 18 gauge wire inch is stripped of and using a wire crimper the ring terminal is attached to it. Now this is connected to the battery isolator’s ignition terminal with the help of a 3/8 ratchet and socket. Now the 18 gauge wire is connected to ground by connecting it to the ground source in the frame.

A wire fixed on the frame near to the passenger is a good ground point. Both the ends of the wires are fixed with a ring terminal by using a wire crimper and then it is connected to the ground using a 3/8 ratchet and socket. A four gauge wire is run from the second battery’s negative terminal to the ground. By doing all these the second battery can be made to charge.

It is easy to couple the secondary battery with the primary battery using this manual on HOW TO CONNECT A BATTERY ISOLATOR where it eliminates the need for supervision.

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