Negative black positive red8/28/2023 ![]() So, after that, clamp one side of the black cable onto the lively battery’s negative terminal and connect the cable’s other end to any metal part of the car, either the frame or engine block. Then, fix the second part of the red cable onto the positive terminal on the lively battery.Ĭonnecting the red cable first will help avoid damage if the other part of the cable mistakenly touches the frame or any metal part of the other vehicle. When jump-starting a car, carefully clamp one side of the red cable onto the positive terminal of the dead battery. Of course, you hook up the red cable first before the black if you’re wondering whether the procedure is positive or negative first when jumping a battery. ![]() This is because once you have already connected the negative cable before the positive cable, when the wrench mistakenly touches a metal part of the car in the process of connecting the positive cable, it will arc through you or possibly lead to a fire outbreak. ![]() In other words, connecting the negative cable first will pose a possible dangerous outcome in the process of attaching the positive cable and tightening up the same. This is because the positive cable will not arc if your wrench or spanner touches the car’s body in the process of tightening up the cable due to the absence of the ground (negative cable). When connecting a car’s battery cables to the terminals, ensure to put the positive first before the negative cable. FAQs Q: Why do you put the positive terminal first? For more guides, I recommend you check how to safely disconnect the car battery. In other words, while the connection procedure starts with the positive terminal, the disconnection procedure begins with the negative terminal. In that case, simply follow the reverse order of connecting the car’s battery. If you disconnect the positive terminal first before the negative, the wrench you use in removing the positive cable may touch the car’s body (metal surface) or the engine block and trigger a severe spark capable of damaging the battery. Therefore, carefully remove the negative battery terminal first before the positive terminal. The cables are not mere wiring that can be randomly removed when disconnecting a battery. Which car battery terminal to remove, positive or negative first?Īgain, identifying the order between positive and negative first when removing the battery can be somewhat confusing. So, to avoid sudden electrocution or fire outbreak, carefully attach the positive cable to the positive terminal first before fixing the negative cable in place on the battery’s negative terminal. The BIG QUESTION is – why connect the positive terminal first? It is simply due to the safety it provides in the connection process.Ĭonnecting the negative terminal first before the positive can trigger a big spark or arc through you when the spanner or wrench you’re using to tighten the positive cable gets in contact with a metal surface on the car. So, here’s the answer – connect the positive terminal first when connecting a battery before the negative terminal. Which car battery terminal to connect, positive or negative first?ĭiscerning the correct order between positive and negative first when connecting a battery can be confusing without a proper guide. Let’s delve into the contemplations below. You will learn why the correct connection procedure is important, as well as the dangers of engaging in the wrong approach. This is a guide to provide a simple solution to your contemplations. ![]() The same contemplation applies to the disconnection process. One of the primary contemplations is whether to attach negative or positive first when connecting the battery cables to the terminals. However, it is one of the most confusing exercises to perform, irrespective of the simplicity of just removing or attaching the battery cables from/to the terminals. Connecting or disconnecting a car’s battery seems easy. ![]()
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