Which cable is positive when jumping a car?
Each battery has two metal terminals. One is marked positive (+), the other negative (-). There are also positive and negative cables in the jumper cable set. The red one is positive (+), the black one is negative (-).
What happens when you hook up jumper cables wrong?
The next day I got a friend to help me jump it. He put the cables on wrong and when we put them on the right way, the car wouldn’t start. I had it towed to mechanic. They said they didn’t know exactly what was damaged but the ECM was probably blown.
What happens when you disconnect the positive terminal on a car?
That means that if you go to disconnect the positive terminal first with a metal wrench and you bump anything that is metal that is also connected to the frame of the car, you will automatically complete the circuit and begin to short out the battery.
What happens if the ECM is blown on a car?
They said they didn’t know exactly what was damaged but the ECM was probably blown. They also said the electricity was running backwards and even if the ECM was replaced, all electric systems would start failing in a domino effect. They also called a local dealership to verify this.
What should I do if my car jumps over a cable?
Verify the voltage of the battery in the vehicle doing the jumping. If they do not match, serious damage can occur to both vehicles. Park the cars close enough for the cables to reach, but they should not touch. Turn the engine off in the car with the good battery.
How to connect jumper cable to dead car battery?
In order to do this successfully the cables should be connected in this exact order: Connect one end of the red (positive) jumper cable to the red (+) positive post of the dead car battery. Connect the other end of the red (positive) jumper cable to the red (+) positive post of the fully charged car battery.
Why does my positive battery cable spark when I try to?
I first thought the battery was the problem because it was dead. I recharged it twice with it starting. The next time it would not turn over. I changed the starter and I believe my friend crossed the wires causeing it to spark when the cables were attached. either that or I have a ground some where.
Are there any aftermarket ground connections for cars?
Aftermarket wiring harnesses have ground connections built into them, making the grounding process a no-brainer. Painless Performance has universal and application-specific harnesses for fuel injected engines, plus complete vehicle harnesses for muscle cars, street rods, and race cars.