I assume you're asking how can you tell which is positive and which is negative? The red cable is positive in the black cable is negative. But if they are not color-coded the positive battery post is slightly larger than the negative battery post. If you try to connect the negative cable to the positive post it would be a tight fit and if you connect the positive cable to the negative post it would be loose.
Red is positive. If they are both black then the cable that is connected to ground is negative and the other cable is positive.
When jumping two automotive batteries, connect the positive () cable to the positive terminal of the dead battery and the other end to the positive terminal of the live battery. Then, connect the negative (-) cable to the negative terminal of the live battery and the other end to a metal surface on the car with the dead battery, away from the battery.
Connect them together in Series. Connect the negative post of one battery to the positive post of the other battery. Then connect the negative charger cable to one negative battery post and the positive to the positive post of the other battery.
To hook up jumper cables, attach one cable from the negative post on one battery to the negative post on the other battery. (These usually are marked "-" and have a blacl cable attached to them.) Attach the other jumper cable from the positive post on one battery to the positive post on the other battery. (These usually are marked "+" and have a red cable attached to them.)
To recharge the battery on a 2014 Dodge Avenger, connect the positive (red) cable clamp to the positive terminal of the battery, which is marked with a "+" symbol. Then attach the other end of the positive cable to the positive terminal of the charger. Next, connect the negative (black) cable clamp to the negative terminal of the battery, marked with a "-" symbol, and the other end to a metal ground point on the vehicle or the negative terminal of the charger. Always ensure the vehicle is turned off before connecting the cables.
There are typically two cables, one is usually red and the other black. The black cable attaches to the negative terminal on the battery and the red wire connects to the positive terminal on the battery. When removing the battery from the vehicle always remove the negative cable from the battery first. When installing the new battery always connect the negative cable to the battery last.
Disconnect the positive (+ / red) cable first. Then disconnect the negative (- / black) cable. Do not let one touch metal when other on battery. Take off brackets holding battery and remove. Replace with new battery, put in brackets... attatch cables, negative first, then positive.
When jumping a car battery, first connect the red (positive) jumper cable to the positive terminal of the dead battery. Then, attach the other end of the red cable to the positive terminal of the working battery. Next, connect the black (negative) jumper cable to the negative terminal of the working battery, and finally, attach the other end of the black cable to an unpainted metal surface on the car with the dead battery, away from the battery itself. This order helps prevent sparks and ensures safety during the jump-start process.
To safely jump a car when the positive terminal is red, follow these steps: Connect the red (positive) jumper cable to the positive terminal of the dead battery. Connect the other end of the red jumper cable to the positive terminal of the working battery. Connect the black (negative) jumper cable to the negative terminal of the working battery. Connect the other end of the black jumper cable to an unpainted metal surface on the car with the dead battery. Start the working car and let it run for a few minutes. Try starting the car with the dead battery.
Nothing as long as you did not then connect the other cable.
To jumpstart a 2003 Mercedes-Benz S500, first locate the battery, which is in the trunk. Open the trunk and remove the cover to access the battery terminals. Connect the positive (red) jumper cable to the positive terminal of the dead battery and the other end to the positive terminal of the donor battery. Then, connect the negative (black) jumper cable to the negative terminal of the donor battery and attach the other end to a metal ground point on the car with the dead battery, avoiding the negative terminal directly to prevent sparks.
To jump a battery is exactly the same as you would jump start any other cars in the world. 1. Connect the jumper cable positive clamp (Red color) to the positive post of the dead battery. 2. Connect the jumper cable negative clamp (Black color) to the negative post of the dead battery. 3. Connect the other jumper cable positive clamp (Red color) to the positive post of a good battery. 4. Connect the other jumper cable negative clamp (Black color) to the negative post of a good battery. 5. Start your Mercedes. 6. Reverse the 1-4 steps when the car starts successfully. Note: Step 3, and 4 could be a good strong battery, or a battery on a running car. weijen_hsu@yahoo.com