Clean both battery posts with a wire brush. Disconnect the negative cable from the engine block.
Wiring Twins W 3 Batteries Help Reviewing Wiring Diagram
How to connect boat battery cables. At the source or battery you will read 12 volts using a voltage meter but at the other end of the cable your voltmeter will only read 1176 volts 12 volts 2. Connect the positive cable to the solenoid relay or starter. Technically with battery lugs the first crimp should be made at the end of the lug closest to the wire. This is backwards from the way industrial compression lugs are crimped. Disconnect the battery cables starting with the negative cable before disconnecting the positive cable from the battery. Lets say that your length of battery cable is connected to a 12 volt battery and has a voltage drop of 2 which is considered adequate for almost all electrical systems.
Once the battery is disconnected gently lift it out of the battery box and place it out of the way. Shoreline marine presents captain weekend loye futch a 25 year veteran of the marine industry and professional boat mechanic who will show you how to properly connect wires to a marine battery. Connect the neutral black port of your house battery to the distribution panel on your boat. Locate the battery within your boat and switch the marine battery switch to off while you remove the old battery. The second crimp is then made closest to the hole. I have done it backwards and never had a problem.
Connect the circuit breaker to the power connection on the control switch and connect the power connection to the engine. Remove the positive cable from the solenoid relay or starter. If your circuit needs 100 amps of current the battery cable will be absorbing 2 amps 24 watts of current because of its resistance leaving 98 amps.
Gallery of How To Connect Boat Battery Cables
