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I just did this between a 70's car and a 90's car.. The cable started to smoke quite a bit, it burnt the wires in the positive lead and broke it.
I don't know how bad it was for the car, but both drove away after we used a new jumper cable correctly.
Electrial systems today are pretty well protected by fuses. It's the circuit breakers you need to worry about because there is the potential for fire.
Many cars are protected by in line fusible links and worst case scenario, you cut off all power to the vehicle until the fusible link is replaced, however these keep the vehicle from having major damage. At any rate, it is not good to hook positive to negative because of the issues it can create.
What else can I help you with?
What happens if you connect the positive to the negative while jumping a Nissan Maxima?
your battery will make a big spark or your battery could blow up.
What is the correct order of colors to connect when jumping a car?
The correct order of colors to connect when jumping a car is red to positive () and black to negative (-).
When jumping a car do you connect positive one first?
Yes connect the positive first to the positive battery post, and then connect the negative ground to the engine somewhere and not to the battery.
When jumping a dead battery are the positive terminals connected last?
No, always connect the negative last.
Can you connect negative to negative in jumping your car?
If you want to jump start your car, connecting negative to negative and positive to positive is the only way to do it. Connecting negative to positive will result in extensive damages to the electric systems of both cars.
What is the proper battery cable connection when jumping two automotive batteries?
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.
How do you jump start a 1992 BMW?
(1) Connect positive cable to positive post of battery that is being jump-started (2) Connect opposite end of positive cable to positive post of battery that is doing the jumping (3) Connect negative end of cable to negative post of battery doing the jumping (4) Connect opposite end of negative cable to GROUND on vehicle being jump-started. Be sure and connect in the order indicated (1-2-3-4). To disconnect cables after jumping, reverse the steps (4-3-2-1). Following the above order of connecting and disconnecting will prevent any sparking or arcing that might fry the ECU or other electronic components.
Is jumping a car a positive or negative experience?
Jumping a car is typically seen as a positive experience because it allows a vehicle with a dead battery to start and continue functioning.
Which cables go on first when jumping a car?
When jumping a car, the red positive cable should be connected first, followed by the black negative cable.
How do you demonstrate the correct procedure for jumping to start battery?
Connect positive cable of donor battery to battery of car being jumped. Then connect negative cable to negative battery post on the donor car and lastly to a ground point on the car needing the jump start, normally the engine. Do not connect to negative post of battery needing a jump start. Let donor car run for about 5 minutes and then attempt to start. The instant the engine starts reverse the procedure to disconnect the jumper cables.
When jumping a car why do you have to put the negative cable on ground?
You connect the negative cable last and connect it to ground rather than to the negative post of the battery because there may be a small spark when you make the connection. Batteries can emit a slight amount of highly explosive hydrogen gas. That spark on the negative post can cause these fumes to ignite and explode. That is why you always connect the negative cable last and always connect it to ground and not to the battery itself as a safety measure.
What color goes on what when jumping a car?
When jumping a car, the red jumper cable goes on the positive terminal of the dead battery and the black jumper cable goes on the negative terminal of the good battery.
