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22
votes
3answers
7k views

Jump starting a dead battery: Connect black wire to negative pole of battery or grounded metal?

Most of the advice I've seen for jump starting cars instructs to connect the black wire to a bare piece of metal on the car with the dead battery. However, I've always just hooked up both poles to the ...
5
votes
4answers
253k views

The car won't start, not even click, but everything else works fine in the car

The car has powerful new battery (1 week old). I drove the car and after 4 hours, the car will not start, not even click when you try to start the car? All the lights are ok and they are not dim. What ...
4
votes
1answer
123 views

Is it necessary to have the good car's engine running when jumpstarting

When jump-starting a vehicle, one first connects the positive and negative terminals between the two cars: positive to positive and negative (good battery) to a bolt head on the vehicle with the dead ...
11
votes
4answers
48k views

Is it possible to harm your car by giving someone a boost?

This post explains why it's a potential hazard to clip to the negative post on the dead battery when giving a boost. But I've also been told that I could damage the electronics in my own car if I give ...
4
votes
2answers
151 views

When Jumping a Battery Why Red FIrst

So, it's fairly popular consensus online that it's red clips to red posts, then black clips to frames, but why red first? One site mentions sparks, but you'll still get a spark when connecting black ...