12/13/2023 0 Comments Installing battery isolator![]() Test the system by starting your vehicle. Make sure the cutoff switch is turned off. Following the instructions that come with your switch, reattach the negative lead to the switch, and tighten securely. Then use another piece of the wire to ground the negative cable of the car's battery to the frame. Reattach the positive lead to the positive battery terminal, and tighten securely. Crimp on 2 electrical connectors that will attach BAT to A. Then, cut a piece of the 14 gauge wire so that it fits between the alternators BAT terminal end and the end that is marked with an A on the battery isolator. Be sure that they are secure and tight when you are hooking them up. This is where all of the wires from the BAT terminal that you just connected are going to go. Look for the terminal on the isolator that is labeled 1. All of these wires will need to be disconnected. Next, check for the wires that are attached to the BAT terminal, which will be located on your alternator. Then, take the negative cable from your actual car battery and remove it. Keep in mind during this step that you have to disconnect the negative cable before you attach the positive terminal to anything so that you do not get shocked. Once you have hooked up the isolator you can do the actual wiring. Again, hold it on tight so that you can secure it completely flush with the frame. Carefully drill around the isolator attaching it to the frame with the sheet metal screws. You may want to have another person help you with this step to hold down the isolator securely as you drill. Be sure before you do any installation or securing that you can close the hood with no problem and that all other parts work without disruption. This is typically done in the engine compartment and needs to be hooked up to the actual metal part of the vehicle. Now that you know whats going on under the hood, you can install the isolator. Then, once the car is ready to be worked on, you will want to check out the manual just to familiarize yourself with everything that is going on so you know where to look. You do not want to be working in it and then burn yourself or cause any electrical damage. It can be fitted to all 12V vehicle types. Then, allow the car to cool completely for about 20 minutes or so, especially if you were just out driving. Easy to Install The electronic isolator does not require any changes to the vehicles existing wiring. Step by step Battery Isolator install (12V 140 Amp Dual Battery Isolator by KeyLine Chargers - Voltage Sensitive Relay (VSR) Pro Dual Battery Kit). ![]() This is an extremely important step so that you do not do any damage to the car and more importantly, to yourself. It will defeat the purpose of the isolator to leave the batteries connected with a switch or solenoid.Begin by making sure that the car is turned off. It should be push button controlled and used only in case of need. The solenoid should be capable of carrying starting current. It is two separate battery systems charged (through the isolator)by a single alternator.Ī push button controlled solenoid may be added to temporarily connect both systems together should the need arise. The isolator diodes prevent either battery from feeding the other system. The alternator outputs the maximum charging voltage and any/either battery that is below that voltage will charge until it is up to the charge voltage. The power out wire from the alternator is connected to the input of the regulator and the two output terminals of the isolator are connected to the two battery systems.Īutomotive charging is voltage controlled, not current controlled. If you are driving a vehicle that presently requires two batteries, it may be better to add a third battery (via an isolator) for your accessory loads.
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