There are two reasons for hooking up two batteries in your vehivle. Provided you include diverse electronic devices in the motorcar, you may duty to associate the batteries separately so the moment battery can ability the devices without draining the basic one's function. Or you can link two batteries to build else faculty nowadays (allied connecting two 6-volt batteries to receive 12 volts). The wiring resources is contrasting for Everyone of these.
Instructions
Connecting Separate Batteries
1. Connect a battery isolator to your generator (in a vehivle, this is the alternator). The isolator is a switch that can alter the gift between the two batteries.
2. Connect a terminal on the isolator to the pleasant terminal on one battery. Connect the moment battery's great terminal to another terminal on the isolator. If you need to use your own wire for this, use a new No. 8 GA wire.
3. Wire one battery's positive terminal to the starter and ignition switch, making this the "starter battery." Connect the second battery's positive terminal to the accessories you will use the extra battery for.
4. Secure the negative terminals of both batteries to a ground. The battery cable in the car supplies the ground for the starter battery. Attach the black battery cable, which is the grounding cable, to the negative terminal on the second battery.7. Link the two batteries by connecting the first battery's negative terminal to the second battery's positive terminal.
5. Connect the red battery cable, which is connected to the alternator and ignition switch, to the positive terminal on one battery.
6. You must locate a good metal ground to associate a cable for the other battery. Placing the cable leads under a screw somewhere on the chassis will work.
