How to Jump-Start a Truck with a Car?

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When your truck battery is dead or has been drained, you may also need to jump-start a truck. Truck batteries are usually much larger than car batteries, so it can be hard to jump-start a truck with another car. How do you know if your diesel engine is capable of starting the truck? How should you drive after the jumpstart in order to avoid damaging your battery connection? What if the car doesn’t start after the jump start? We’ll answer all these questions and more in this blog post.

So, how to jump-start a truck with a car? The best way to jump-start a truck is by using another car. Park the vehicles close together and turn off both engines, make sure they’re in the park or neutral with their parking brakes engaged. Attach one red cable from your dead car battery to the positive terminal of the source car. Also, connect another cable with the source car “-ve” terminal and dead truck unpainted metal part.

If you are looking for a step-by-step guide on How to Jump-Start a Truck with A Car, this is the article you need. I will be walking through all the various steps that go into jump-starting a truck from another car and show you how easy it can be.

What does “Jump Start a Truck” mean?

A jump-start is a fast boost of energy. When your truck battery dies, you can connect the power from another vehicle to give it sufficient charge so it starts again.

Moreover, it’s used when your truck battery has been drained and needs an extra push of power for the starter motor in order to get going again. You need another vehicle that can provide enough charge, so you connect jumper cables from one engine compartment to the other until they touch–a temporary connection that allows both motors to run side by side until needed off each others’ energy supply.

What to Do Before Jump-Starting a Vehicle?

Even if you’ve never done it before, the process of jump-starting a truck is fairly simple. You may not know how to jump-start a truck. Follow these simple steps that will help guide you through the process of how to jump-start a truck with a car.

  1. Check the owner’s manual for instructions about how to jump-start a truck, referencing your vehicle. You should need to follow proper procedure. 
  2. Check your dead battery terminal. Because, according to AAA, the most common reason for a “dead battery” is not actually a dead battery at all but rather some dirty terminals.

If you are working on a car battery, make sure to wear gloves and safety glasses as protection. You’ll also need baking soda mixed with water for the battery terminals, a wire brush to remove any debris from your connections of wiring and finally an old rag or towel in order to clean up after yourself once all is said and done.

  1. Always keep your hands a safe distance away when connecting the jumper cables to avoid an acid burn.
  2. If you have a cool water spray bottle, give the truck battery connection terminals a good rinse. Wipe them dry with an old cloth and use a wrench to tighten the connections as much as possible.
  3. After this, turn on your truck’s ignition to see if it has solved your problem. If not, follow that step by jump-starting your truck using jumper cables from another vehicle.

Steps on Jump-Start to a Truck with a Car

I know that when you’re stranded on the side of the road, it’s frustrating and scary. Luckily, there are some easy ways to jump-start your car with supplies from home.

Have you ever been stuck on the side of the road? If so, then this article may just save your life one day! Jump-starting or boosting your own car can seem like an impossible task without help from someone else, but it doesn’t have to be difficult if you follow these steps:

 Required Tools:

  1. Jump Cable.
  2. Power source or Source Car.

Step-01: Choosing the right jumper cables for your battery.

Sometimes a car battery just needs to be jump-started in order for it to start the vehicle. There are many tools that can do this, but jumper cables are one of the most popular and easy ones due to their price point and ease of storage. One thing you may not know about these crisscrossed wires though? The gauge rating indicates how strong they are! Lower numbers equate thicker wire which equals stronger cable power – so go with 6 or 8 if possible!

Step-02: Start the diesel heater in order to protect the truck’s electrical system from voltage surges.

Step-03: Make sure to turn off all lights and other electrical accessories on the disabled diesel vehicle.

Step-04: Check the cables attached to your truck’s battery. They’re usually thicker on one side, and this indicates that it is a dual-battery system. Attach jumper cables to whichever set of thick cables you find on either vehicle (if both have identical thickness). If there are no thick cable connections at all, then use any connection point between two batteries in order for electricity from one battery to jump-start another. You’ll need someone else with their own working vehicle present–or as always be sure not to hook up negative (-) first.

Step-05: Connect the positive jumper cable clamp (red jumper cable) to your disabled vehicle’s positive cable terminal.

Step-06: Connect the other end of this jumper cable (red jumper cable) to a positive terminal on your “source” vehicle.

Step-07: Connect one end of the other jumper cable (black jumper cable) to the source vehicle’s negative terminal.

Step-08: Make sure the other end of that jumper cable (black jumper cable) is securely connected to an unpainted, metallic part on your disabled vehicle.

In order to jump-start a truck with a car, never connect the black clamp end of a car battery with the truck’s dead battery. Connecting the two would create sparks which may cause an explosion.

Step-09: Now that you’re ready to roll, start the engine on your source vehicle.

Step-10: Start the engine of your disabled vehicle, and let both engines run for a minute or two.

Step-11: Turn off the source vehicle’s engine, and Keep the disabled vehicle’s engine running so that it does not lose power.

I’ve forgotten to mention some important safety requirements, so let’s address these.

Important Safety Tips

Safety is not something that should be taken lightly. It goes without saying, but I will reiterate for the sake of clarity: safety comes first!

I do want to mention some more important safety requirements before we delve any further into this subject matter- it’s a topic near and dear to my heart.

  1. The first thing you should do when trying to get your truck started is to make sure the battery doesn’t have any damage. If it does, don’t try jumping start; instead, call roadside assistance or a tow truck!
  2. Batteries emit very flammable hydrogen gas. If you’re working on a battery, make sure to have no open flames or cigarettes in use as this will cause an explosion and fire hazard.
  3. To be safe when using jumper cables, they should not touch. This can result in an electrical arcing situation which could lead to damage for people and vehicles nearby.
  4. Fold your jumper cables to keep them from tangling around the engine block. They can get caught in moving parts and potentially do major damage to vital components of your car like gas lines or exhaust system, even with just a slight bump!
  5. When you’re going to jump your truck with another car, make sure both vehicles are off before connecting the cables.
  6. Heavy-duty jumper cables are a must for any vehicle. They ensure that the power is going to flow from your battery. The high quality of heavy-duty cables means they last longer than lighter cable alternatives which can quickly become worn down if left in hot environments or exposed to saltwater regularly.
  7. In order to avoid an explosion, never cross cables when they are attached to a battery. If the clamps contact each other while connected to a battery or jump starter, this can result in sparks and lead to possible fire hazards.
  8. Make sure you keep your face away from the batteries at all times. If they get too close to one of them, it could be disastrous and result in a severe injury.

Why Won’t Your Engine Jumpstart?

If you’re having trouble jumping start your battery, it may be due to one of these issues:

  1. Your battery may be too old to repair and needs battery replacement.
  2. If your car refuses to start, the terminals on your battery might be clogged with corrosion.
  3. The vehicle may have another mechanical problem somewhere, such as a blown fuse or failed alternator.

In the bellow, I will give you some tips on how to resolve this problem- if jump start fails.

Solutions: If the Jump-Start Fails             

Unfortunately, jumping your car is a quick fix and has its limitations. If the jump start does not seem to work on your car after a few attempts, check other issues like battery corrosion alongside battery power. Most batteries are rated for 4-5 years of use so before blaming it on age consider looking elsewhere first.

Moreover, if the truck starts but won’t start again after you turn it off, your vehicle battery may be at fault. The alternator is used to keep the battery running while it’s being jump-started; however, when it’s turned off the battery can no longer sustain a charge on its own.

It’s not always easy to know whether it is the battery causing your car trouble or something more serious. If jumping starts does get your engine running, but you have a problem with starting up again once turning off the ignition then this can be sign of a weak battery. But if after jumpstarting and all seems well for a while until another issue arises like no power at lights or windows are going down on their own then there may be other factors involved such as faulty wiring, including

  • Faulty Alternator.
  • Battery Terminal Corrosion.
  • Faulty Ignition Switch.
  • Faulty Starter Connection.
  • Fuses

If none of the above fixes the problem, you may need to contact a service technician for help.

How to Protect the Donor Battery?

Connecting a battery to another can be tricky. To make sure you don’t damage the good batteries, follow these steps:

Matching the voltage when “jump-start” a truck with another car can be difficult, so make sure to find batteries that have the same kind of voltage system. For example, if you have a 24 V battery then don’t attempt to use 12 volts all at once.

Start by connecting alligator clips in order: red should always go first–to begin “charging” this way reduces chances of shocking both batteries. Which could lead those prematurely ending up damaged beyond repair due solely, because they were used together when their electricity needs differed vastly.

Next, for successful jump start, make sure your donor car battery is charged.

When giving a jump start, make sure to check the voltage of donating the car. If you see dim headlights when starting your engine this means that there is an issue with either battery or connection and needs fixing before it becomes dangerous.

A quick test for whether someone has enough power to give a jumpstart: if their lights are bright while they’re running but don’t stay lit after they shut off (or go from intermittent flashes) then we might have found our problem.


We hope this article has been helpful in understanding how to jump-start a truck with a car. If you ever find yourself stuck on the side of the road, we want you to feel confident that you can get back on your way quickly and safely. With these tips and tricks for jump-starting a car or truck, no one will be able to stop you from getting wherever it is that you need to go. Let us know if there are any other questions about cars or trucks below so we can help answer them too! Have fun out there.


Can you jump-start a 24-volt system with a 12-volt system?

A battery that delivers the correct voltage is essential for almost all vehicles. If you have one 12-volt battery and your truck needs 24-volts, it won’t work because they are at different levels of power but if your truck has two batteries then both create enough charge to start an engine.

Can a small car jump-start a big car?

You can jump-start process a large V8 with a 4 cylinder. Occasionally, the truck battery will need just enough charge to kick it over. If that’s not successful, you may need to let another car stay running for few minutes in order to get some charge into that vehicle’s battery if it is very weak.

Does revving engine help jump starting?

Yes, but revving your engine up to 2,000 rpm or 2,500 rpm and holding it there while the other car tries to start will give you a boost in power.

How long does it take to jump-start a truck?

In order to revive your dead car, you’ll want to first start up the good one and let it run for two minutes. Next, turn on the other vehicle but don’t give it a chance yet–leave both running with their cables attached for another 2 minutes. When that time is up simply detach them in reverse of how they were connected (i.e., disconnect the negative cable before positive), then crank over your newfound friend and head back onto the road.

Can jumper cables go bad?

But as the vehicles are used, someday those weakened components will break and fail. And when they do it may be weeks or months later, so you’ll never know that your use of conventional jumper cables was to blame for a sudden failure during your travels.


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