How to Find Reverse Light Wire

No one wants to be in a situation where they’re driving, and their car suddenly dies. While there are some things you can do to prevent this from happening, it’s always best to be prepared for the worst. One thing you can do is locate the reverse light wire on your car. This way, if your vehicle does die, you’ll at least be able to back up safely. In this article, We will teach you how to find reverse light wire.

How to Find Reverse Light Wire

Reverse light wiring can be tricky to find, but it’s a breeze with a little bit of know-how. In this article, we’ll show you where to find the reverse light wire on your car and how to connect it.

Tools and Materials

  • Multimeter
  • Electrical Tape
  • Wire Strippers
  • Needle nose Pliers

A Stepwise Guide on How to Find Reverse Light Wire

Step 1 : Before You Start

Before finding the wire that will turn your car off, you should raise both feet. This will prevent you from accidentally triggering the reverse lights while trying to find it. Once your vehicle isn’t running, you should turn off all of its lights. To disconnect the negative terminal on your battery, you should either locate the fuse box or look for a black wire coming from your engine. Once you find it, open the lid and remove the 10mm bolt.

If you’re planning on working on your car’s electrical system, it’s important to disconnect the power first. This will prevent you from getting shocked by electricity. Note: If you’re not sure how much voltage is running through this area, it’s best to contact a professional.

If you want to improve safety when working with a battery, you should cover the area around it with newspapers. This will create a barrier between you and the battery, in case something goes wrong. It’s also important to work on a clean, flat surface. This will help to prevent any accidents.

Step 2 : Find Wire Crimp Connector

Finding Crimp Connector

After covering your car in newspaper and ensuring that there is no electricity running to it, find the reverse light wire. This is usually a green and white (or yellow and black) wire. Once you find the crimp connector or back of your reverse lights, use your needle nose pliers to cut off any excess wire from the crimp connector, as well as a strip of wire about 3/4 to 1 inch long. This is a crucial step in finding the reverse light wire.

Step 3 : Find Reverse Light Wire with Multimeter

Before testing the wire, unroll a piece of electrical tape and place it on your multimeter’s probes or wrap the ends around them. This will prevent you from accidentally touching the wrong button and shorting out your multimeter while continuously pressing different buttons. Now that you have done this, test whether or not there is electricity running through the crimp connector terminal by turning your car key forward (as if trying to start it).

Testing Wire

If you see a small number of volts running across both probes, it means that your car’s electrical system is working properly. If you don’t see anything after cranking your car forward, it means that your car’s electrical system is shorted out and needs to be fixed.

If your car won’t start, first try turning the key off and then trying other wires until you find one that works. If that doesn’t work, try turning the ignition switch again but this time, turn it back immediately after hearing a click or seeing a single flash of electricity run across the probes. This should reset your car’s electronics, opening all wires for testing.

Step 4 : Again, Find Reverse Light Wire by Using Multimeter

Although everything should have been put together before now, if not, do so now. Once everything has been appropriately connected, go ahead and test the red wire once more with your multimeter. Be sure that you are touching the wire gently with probes or wrap them around the wire themselves.

Once you have found the correct red wire, you should mark it in some way so you won’t confuse it with any other cables that look similar. Although this might sound like unnecessary extra work, you will find out for yourself how easy it is to get something as small as a different colored piece of electrical tape mixed up.

Step 5 : Finish Up

Once you have entirely tested your wire and know what belongs, unroll another piece of electrical tape and place it on top of your crimp connector terminal. Be sure to cover the entire area surrounding it so nothing will short-circuit after installing.

You can now safely tuck away your crimp connector in an appropriate spot within your dashboard or behind the kick panel, depending on where you plan to install it. Once this is done, re-attach your reverse lights back onto your vehicle’s body and gently tuck the wire away for storage.

Step 6 : Connect Reverse Light Wire

Before attaching anything back together, be sure that every piece is connected securely; otherwise, you will end up with a loose connection which can cause damage to other components of your car’s electrical system.

After everything has been connected correctly, carefully tuck your new reverse light wire underneath the headliner or wherever you have decided upon installing it. Don’t make any fast or unnecessary movements as this could cause physical harm not only to yourself but to others who may be riding with you.

Turning Car Key

Once again, you can now test your connection by turning your key forward (as if starting the car) without thinking of what will happen if it doesn’t start this time. If everything is connected correctly, nothing will happen, and you can breathe a sigh of relief knowing that you didn’t just fry your brand new vehicle’s electrical system. These steps will help in how to find reverse light wire.

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Precautions

  • Make sure that there is no power in the car when working on it. Disconnecting any electrical component can cause injury or start a fire. Always work with either both hands or one hand and your knee holding something down to ensure it doesn’t move around while working on it.
  • Be prepared for all kinds of weather, especially rain. If possible, wait until an outdoor part can be worked on without getting wet before doing the job (especially the gas tank cover). Remember that there aren’t fixed hours to do this kind of stuff; if you need to go out at night to do some work because you’re broke and don’t have anything better to do, then so be it! Just take precautions not to get hurt if something goes wrong.
  • Always be prepared to break something even if you are an expert in what you’re doing. If it’s your first time, then there is no question that you will fail at least one screw or bolt, sometimes more than one! Just make sure to work efficiently and slowly rather than fast and complex because the harder you try, the more likely this is to happen.

Where to Find Reverse Wire for Head unit?

Reverse wire for your head unit is often found behind the same wire that powers your headlight. You will need to look at the back of the wire to find it. Look for a light blue wire with a dark blue stripe; this wire will lead you to the reverse switch.

When you see this cable, look closely along until you find another cable running parallel with it. This is your reverse cable and should be marked so, or else you can test it by touching both wires together (you’ll see power flow through it if it’s the right one).

Now all you need to do is connect each end of these cables into their respective positions on your new deck using standard speaker connections. Please note that not all head units have a reverse wire. If yours doesn’t, you may have to splice the power from your car’s reverse lights into the brown wire of your new head unit. This is more difficult as it requires stripping and soldering.

Using Standard Speaker Connections

At times, some head units do not have a blue or gray wire on them for powering the unit off of, especially in newer cars due to a lack of a 12v accessory lead running to the fuse box. In this case, you will need to run a wire from behind your headlight switch directly to the battery source (ignition switched hot). Please note that you must NOT run this wire through any of your car’s existing wiring.

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Conclusion

We hope you have learned how to find reverse light wire. If you are looking for a quick and easy way to find the reverse light wire, this guide should be helpful. Reverse lights typically run on two types of cables; either power or ground wiring.

The small metal tab that connects your brake pedal with your car’s braking system is typically attached to the grounding wire, so it does not work as well when there is no metal in contact with the vehicle body.

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