Reverse lights not working

My reverse lights are not working. I replaced the bulbs and checked the fuse. Do I need a reverse light switch replacement?
Experienced mechanics share their insights in answering this question :
After replacement of both bulbs and the fuse, my next step would be the reverse light switch. Be sure to have your rear lights tested by a qualified technician before having it replaced, as it is not guaranteed to be the faulty part. If this switch does not have continuity, electricity cannot pass through it. If this is the case, the switch is bad and will require replacement in order to get the reverse lights functioning properly again.

How to Identify and Fix Common car Problems ?

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First check that the bulbholder and wiring terminals are clean and bright. If there is any corrosion, clean it up with wet-or-dry paper then refit the bulb and retest. If the bulb still fails to light, the fuse may have blown. You should also suspect a blown fuse if two reversing lights go together.
While there is usually a legend in the fuse panel lid, a more detailed version is usually in the owner`s handbook, and, this may help as some fuses supply more than one item in many cases. There should be a fuse panel behind the coin tray, fuse 18 is for reverse lights.
Mechanical or Hydraulic switch, activates the reverse lights of the vehicle as soon as the transmission is engaged. There are two primary types of reverse light switches. On a manual transmissions the switch usually screws into the gearbox casing; This type of switch has two terminals.
Reverse light relay wiring

You usually don`t need a relay for power consumption under 60 watts. If your aux lighting is more powerful than 60 watts, you need one standard Bosch relay. With this method, diodes are not required.

Fuses for everything electrical, including your tail lights, are always found in the fuse box. They are usually located under the hood or in the cabin. Fortunately, you can fix this type of problem by replacing the fuse.
Ship Switchgears is a manufacturer of Fuse Holder and Carrier to suit the bolted type HRC Fuses. Housing made of electrical grade Bakelite powder material having High Electrical and Mechanical Properties, Non Inflammable, Fire Retardant and Self Extinguishing.
If you were using dual intensity bulbs like for a stop/turn/running light circuit you would need a 3-wire pigtail to provide the voltage for the second circuit. Basically, one wire is the ground and the other wire(s) represent the other circuits.
Originally Answered: Which cable is positive and negative in car reverse light if one is green and the other black? Black is universal color for ground. Cars have a negative ground (with very few vintage exceptions). Therefore, black is negative.
You need to fit load resistors on each indicator light and possibly stop, tail and reversing lights as well. These load resistors need special mounting to ensure the component does not overheat and cause potential fire hazards.
One of the most common situations that require the use of a relay occurs when an application needs to switch from high to low current (or vice versa) within the same circuit. For example, the temperature sensors that power HVAC units require levels of amperage that vastly exceed the capacity of their wiring.
Check the fuse.

A blown fuse usually causes both lights to go out. On newer cars, the tail lamps can be fused separately and/or each bulb or shared circuit can be fused. A fuse can be blown due to other problems, so you`ll need to check more than just the fuse, but it`s the right place to start.

Testing Reverse Lights

Turn the ignition switch to the “on” position (without starting it), then put the transmission in reverse with the parking brake on. It is very important to make sure the parking brake is on. Once that is set, get out of the vehicle and look at the reverse lights, they should be illuminated.

Rear position lights (tail lights)

Conspicuity for the rear of a vehicle is provided by rear position lights (also called tail lights). These are required to produce only red light and to be wired such that they are lit whenever the front position lights are lit, including when the headlights are on.

The reason why some cars have only one reversing light is the cheapness of conversion from LHD to RHD. It is mandatory to have a single rear foglight either in the middle of the vehicle or on the offside – thus a single foglight has to be moved from LHD to RHD.
Bad Socket. If you have a single brake light out and the bulb is good, then the next step is to check the light socket itself. Brake light problems can include a socket whose connections are dirty or corroded or one whose wiring has become worn to the point where it`s only making an intermittent connection.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

All dashboard lights and tail lights do not work after driving through a lot of snow. Headlights work. And brake lights work.
ANSWER : Hello. We’ll be happy to help you. There are a few things that I recommend checking to discover why your lighting system is malfunctioning. The headlight dimmer switch should be checked. Along with the wiring harness above the right front tire behind the fender well cover. Also
the main fuse under the hood should be inspected because other people with your particular vehicle have had similar lighting issues if that fuse goes bad. It will be a great idea to check the rest of the fuses in that area too while checking the main fuse. Once the fuses are checked inside of the main fuse box then I would check the fuses inside of their interior fuse box. The interior fuse box should be located on the driver side of the dashboard near where your legs would be. If you need more assistance with repairing your vehicle please keep in mind that our organization provides Mobile Mechanics who can help you diagnose and repair your vehicle, all at competitive rates.

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Okay so when I turn my lights on at night my brake lights do not work, when I don’t have my lights on they work fine.
ANSWER : Hi there. Based on your inquiry, it’s highly probable that you have a damaged light switch or some electrical fault inside the turn signal relay. However, it’s also possible that the brake switch above the brake pedal could also be the source of your problem. Due to the fact that multiple electrical components might be causing this issue, it’s a smart idea to first have a professional mobile mechanic complete a brake lights are not working inspection, so they can determine what’s causing all of these issues and recommend the right repairs.

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Dash, Tail/brake, dome, trunk, glovebox, and door lights won’t work, dash doing weird things.
ANSWER : Hi there. Sure would appear a lot is going on electrically all at once. This could be, a problem in the PDC (power distribution center). The PDC is typically located under the hood and contains numerous fuses and relays. I don’t believe any one fuse will resolve all of the electrical issues. There is a possibility, it is not a power supply issue. It may be, the result of a poor electrical ground common to the inoperative components. Proper circuit testing should be performed. This would confirm the cause of multiple electrical failures. I recommend having your vehicle’s electrical problems be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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No dash lights, back right tail light is out, no parking lights. Brake lights work though as does head lights.
ANSWER : Hi there. In many cases, when you have electrical problems like you’re describing, it’s caused by multiple electrical component failure. It’s likely that a few electrical relays are not working; especially if you have systems that utilize the same components (such as your brake light and tail lights). I would recommend having a professional mobile mechanic come to your location to complete an electrical problems inspection first, so they can pinpoint what is damaged and recommend the right repairs.

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My dash board don’t work my front light work when I change my light into high beam and my back window won’t go down
ANSWER : As unfortunate as it is, your vehicle would be considered flood damaged. Diagnosing electrical problems in a flood damaged vehicle is nearly impossible. This would take many hours or even days to determine which wiring harnesses and circuits have been affected. Then nearly all of the wiring under the dash would likely require replacement as well as many sensors and switches. On a BMW vehicle, the amount of wires and switches are likely more than that of a lower end vehicle. Due to the inefficiency in cost, you would likely be able to purchase another BMW like yours for less than what it would cost to fix your car. Many insurance companies would consider this type of damage to total out the vehicle unfortuantely.

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signals, daytime running lights are not working, park brake light on dash is on steady and chime is dinging steady 4×4 wont engage
ANSWER : This is likely a brake light switch problem. I would suggest testing the brake light switch which should be located down by the brake pedal. This may also be a computer problem as well as indicated by the other lights on in the dash. I would recommend having an expert from YourMechanic come to your home to possibly replace the brake light switch and diagnose with a scanning tool which will download useful data from the truck’s computer indicating what specifically the problem may be.

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Reverse lights won’t turn on when I put it in reverse. Dark blue wire has power, light green (reverse) wire has no power.
ANSWER : Hi there. Remove the fuse to the reverse lighting system. On the side that does not have power, use a digit ohm meter and check for resistance. The meter should read OL (out of limits). Now, turn on the ignition key to the ’ON’ position, set the parking brake and chock the wheels, and put the transmission in reverse. Check the connection again for resistance. There should be a resistance of 5 ohms or less. If the meter reads OL, then there is a break in the wiring from the fuse box to the switch. Since you disturbed the fuse box, there could be a wire that is loose or broken that goes to the reverse lights. If you need further assistance with your reverse lights not working, then seek out a professional, such as one from Your Mechanic, to help you.

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Electrical wiring issue with the dash lights.
ANSWER : Check the lights on the dash and look for the wiring. Follow the wires to where they hook up to and check that component to see if it’s working. Most dash lights are hooked into the light switch and on the terminal for the dimer lights rheostat. If you replaced the light switch, then there is a break between the light switch and the dashboard light. If you need further assistance with the dashboard lights not working, then seek out a professional, such as one from Your Mechanic, to help you.

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