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It is a safety issue. The reason is that when you are using a wrench to disconnect the battery cable you can easily touch a portion of the car that is grounded. If you were disconnecting the positive + cable first and you accidently touch a metal part the vehicle you will create a massive short circuit with the fireworks involved. The wrench in your hand will become an arc welder. By disconnecting the negative - cable first there is no danger of this happening as touching a metal part of the vehicle will do nothing as you are already working with the ground. Always disconnect the ground cable first and then you can move to the positive cable without worries.
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Should you disconnect the positive or negative battery terminal first - 45k?
Always the negative cable first.
How do you disconnect and reconnect your battery on your 98 Cadillac?
Disconnect the negative cable first and connect the same negative terminal last when installing the new battery.
Is it safe to disconnect car battery while raining?
Disconnecting Auto Battery Terminal ConnectorsYes, it is safe to disconnect a "car" battery while it's raining, IF you do it properly.When disconnecting a vehicle battery, raining or not, ALWAYS disconnect the NEGATIVE [--] terminal first, and when reconnecting, always connect the NEGATIVE terminal last.
When removing the battery leads from the terminals you do what first?
Disconnect the negative - terminal first, then the positive + terminal. Unfasten the battery hold down clamp. When reinstalling the terminal connections connect the positive terminal first.
How do you remove the battery on a 1999 Ford Escort ZX2?
Disconnect the negative terminal first. Then disconnect the positive terminal. Pull the ends straight up. Unbolt the top of the battery frame and lift up the cover on the battery.
Which battery terminal do you hook up first?
Connect the positive + cable first and negative - last. When disconnecting them disconnect the negative - first and positive + last.
How do you change a battery on a smart car?
Battery is located under passenger floor board. Pull back carpet to locate. Disconnect the negative termainal first, then disconnet the postive terminal. remove old batter - install new battery. Connect Negative Terminal first - then connect the positive terminal.
How to disconnect the battery cables?
Disconnect the negative cable first and reconnect the negative last.
When putting in new battery do you connect the positive term and then the negative?
Yes. That is correct.An easy way to remember/ installation is the opposite: When replacing battery: FIRST disconnect the NEGATIVE -Terminal (black) then the POSITIVE +(red) Installation:Connect the POSITIVE Term FIRST then the NEGATIVE Term.
How do you disconnect the battery on a 2002 Beetle?
This is fairly easy... however: DISCONNECT NEGATIVE TERMINAL FIRST!! # Make sure your car is off # Keep your oem head unit codes handy in case you need to reset it # Disconnect you're negative terminal (use a rubber coated socket wrench to loosen the screw holding it in, make sure you wrap it in a rag to avoid it touching any ground on your car, and tape it off or hold it somewhere) # Disconnect the positive terminal # Reconnect your positive terminal # Reconnect your negative terminal # Then secure your battery covers and start your car and you're done!!
Which battery terminal do you connect first?
Positive. This way, a tool on the positive terminal won't cause a short if it accidentally touches ground. By the same token, you want to disconnect negative first when going the other way.
Which battery cable do you always disconnect?
negative first
