Installing additional lighting in the engine compartment is not just a way to make the car unique, but also a practical solution for those who like to service the equipment themselves. Diode tape under the hood It allows you to comfortably diagnose nodes in the dark or in the garage without an additional flashlight. Unlike standard backlights, which are often absent or inconveniently located, LED modules can be placed exactly where the driver needs it.
However, the under-hood space is one of the most aggressive environments for electronics. Here there are high temperatures from the working engine, vibrations, oil, antifreeze and water. LED tape It should not only be bright, but also have the highest level of protection. Incorrect selection of components or violation of installation technology can lead to short circuits and even fire, so the process should be approached with maximum responsibility.
In this article, we will discuss in detail how to choose the right one. light-tapeWhat tools will be needed for the work and how to connect it to the onboard network. You will learn about the nuances of sealing contacts and ways to control lighting. Compliance with all safety regulations will allow you to create a durable system that will please the eye and facilitate the maintenance of the car.
Choosing LED tape for an aggressive environment
The first thing to consider when buying is the level of protection. Regular IP20 or IP33 tapes are not suitable for installation under the hood. You need a protection class. IP67 or IP68. Only such products are fully protected from dust and can withstand short-term or permanent immersion in water, which is critical when washing the engine or moving through puddles.
An important parameter is also the type of glow and color. For technical illumination, cold white light is best, as it gives the most contrasting image and does not distort the colors of liquids. RGB tapes They are beautiful for showcasing cars at exhibitions, but in everyday use they can distract and create glare. If you want to combine the pleasant with the useful, choose models with the ability to switch modes.
Temperature is another critical factor. Standard LEDs can degrade at temperatures above 60-70 degrees Celsius. In the engine compartment, especially in summer, the temperature can reach higher values. Look for ribbons on COB LEDs or specialized car series, which are designed to operate in a wide temperature range.
- 🔍 Choose silicone casting tapes rather than just silicone tubes, as the tube can condense moisture.
- 🌡️ Pay attention to the working temperature: optimally from -40 to +85 degrees Celsius.
- 💡 For technical work, take monochrome white light, for the show - RGB or RGBW.
⚠️ Note: Do not use cheap tapes without quality certificates. In high temperatures under the hood, poor quality plastic or silicone can melt or catch fire, leading to a fire.
Required tools and materials
Quality installation is impossible without the right set of tools. You will need not only the tape itself, but also the means for its reliable fixation and protection of connections. The basis is an electrician installation kit, including bokokorez, scissors, a knife and a set of screwdrivers. To work with wires, a soldering iron or a special crimping tool for terminals is necessary.
Particular attention should be paid to materials for insulation. Ordinary insulation in the under-hood space will quickly become unusable from heating and oils. Use only heat-resistant fabric-based tape or, even better, shrink-tube with adhesive. The glue when heated reliably seals the compound, preventing the oxidation of contacts.
To fasten the tape itself to the metal surfaces of the hood or body elements, additional fixation is often required. Double-sided tape, which comes with tape, may not withstand vibrations and temperature changes. It is recommended to purchase a car sealant or special glue for plastic and metal, as well as an aluminum profile for heat removal if you plan to install a powerful backlight.
☑️ Installation tools
Connection scheme and choice of power source
Connecting a diode tape directly to the battery without a fuse is a gross mistake that could cost you a car. In the on-board network of the car, voltage surges are possible, especially at the time of starting the engine with a starter. To protect the LEDs and wiring, you need to install safety-guard The value corresponding to the power of your tape is usually 2-5 Amperes.
Manage the inclusion of lighting can be different. The simplest option is a separate switchboard in the cabin, connected to the plus terminal through a fuse. A more advanced method is to use a relay controlled from position lights or from a separate button. If you are installing RGB tape, you will need to controllerIt should also be protected from moisture and placed in a safe place.
When calculating the length of the wires, take into account the voltage drop. If the tape is long and the wires are thin, the light may be dim towards the end of the tape. Use copper wires with a cross section of at least 0.75 mm2, and for long sections - 1.5 mm2. All compounds are desirable to be soldered, since the twists in vibration conditions quickly oxidize and begin to warm.
| Component | Function | Recommended denomination/type | Place of installation |
|---|---|---|---|
| Safety lock | Protection from the KZ | 2A - 5A | The severance of the slack wire at the battery |
| rela | Current switching | 12B, 30A | Safety lock or near the battery |
| Controller RGB | Color management | 12B, 6A-12A | Salon or protected compartment |
| Wires | Transfer of energy | 0.75 - 1.5 mm2 | Along the regular wiring |
Why can’t you connect a powerful tape directly to the onboard network?
Powerful LED tapes consume significant current. Direct connection without high-quality relays and thick wires can lead to overheating of the car’s regular wiring, melting of contacts in the fuse block and even fire. Always use a separate circuit with your own fuse.
Installation and sealing technology
Before the installation begins, the surface on which the tape will be glued should be perfectly clean and fat-free. Use a special spray degreasing or isopropyl alcohol. On a dusty or oily surface, even the highest quality glue will not last long, and the tape will begin to unstick from vibration.
The installation process requires accuracy. The tape should not be bent at a sharp angle, as this can damage the conductive tracks. The minimum radius of bending is usually 2-3 cm. Use plastic screeds or special clips to fasten in difficult places, but make sure they do not damage the silicone shell.
Sealing of soldering places is the most important stage. After connecting the wires, be sure to use thermal shrinkage with a glue layer. Heat it with a building hairdryer until the glue is fully fit and protruding from the edges. Additionally, you can miss the connection site with car silicone sealant, creating a second protective barrier.
Lay new wiring away from the hot parts of the engine (outlet manifold) and moving machinery (belts, pulleys) to avoid melting the insulation or winding the wires.
Control and automation of illumination
Modern systems allow not only to turn on the light button, but also to integrate it into the overall logic of the car. For example, the backlight can be automatically turned on when opening the hood or when unlocking the central lock. To implement such functions, you will need to connect to the door ends or use additional opening sensors.
If you use RGB controllerConsider options with smartphone control over Bluetooth or Wi-Fi. This will allow you to change colors and blinking modes without leaving the car. However, make sure that the receiver is in range if the antenna is placed under the hood, although it is better to leave the module in the cabin for stable operation.
Automatic shutdown at engine start is a useful function to save battery life and tape itself. This can be done through a relay that breaks the backlight circuit when the voltage in the mains rises above 13.5 Volts (generator mode). This will protect your system. power-system from excessive load at the time of start.
- 📱 Smart controllers allow you to choose millions of shades directly from your phone.
- 🔌 Synchronization with alarms adds convenience when opening the car at night.
- ⚡ Automatic shutdown during operation of the engine prolongs the life of the battery.
⚠️ Warning: When installing hood opening sensors, make sure that they do not interfere with the standard locking mechanism and will not be damaged when the hood cover is sharply slammed.
Maintenance and safety of operation
Regular inspection of the installed system is mandatory. Once every six months, check the condition of the wires, the integrity of the insulation and the reliability of the tape fastening. Under the influence of vibration and temperature expansions, the fastenings can weaken. Timely detection of the worn area of insulation will prevent short circuit.
Watch for the cleanliness of the plafonds or the tape itself. Dirt, oil and dust significantly reduce light output and can contribute to local overheating of LEDs. Rub the backlight with soft rags soaked in soapy solution, avoiding aggressive chemicals on electrical contacts.
In winter, be careful when washing the engine. A sharp temperature drop from hot water to cold metal can lead to cracking of the silicone shell of cheap tapes. Let the engine cool down a little before the wash or use a gentle wash mode.
Regular check of tightness of connections and integrity of insulation is a guarantee of fire safety and durability of your lighting system.
Can you use a regular 12B household tape if it is well insulated?
It's not recommended. Household tapes are not designed for vibrations that destroy soldering and tracks, and do not have protection from oils and fuel, the vapors of which are present in the air under the hood. Even the most careful insulation will lose its properties over time.
Does the diode tape under the hood plant the battery?
Modern LEDs consume very little energy. The 1 meter long ribbon consumes about 0.5-1 Ampere. If you don’t forget it off for a few days, the battery may run out, but if you use it for a short-term inspection or show, it’s not critical for a good battery.
Do I need an extra radiator to cool the tape?
For tapes of low and medium power (up to 10-14 W / meter), a natural blower is enough. If you are installing a powerful professional tape in an enclosed space, it is advisable to fix it on an aluminum profile that will work like a radiator, removing heat.