How to Install Offroad Led Light Bar W/ Relay & Switch

This is your guide on how to install a universal relay harness wiring set with an on/off switch. This wiring kit will work with any LED light product such as the Ford F-150 LED light bar and makes them easy and safe to work with. For this guide, we will be tapping this LED light bar to achieve superior lighting in dark, off-roading situations. Keep in mind that you can still tap your LED light product into an existing harness, but you cannot control it independently and you will run the risk of it overloading.#1: Optional#2: Optional#3: Tap to LED light bar positive#4: Tap to LED light bar negative#5: Tap to battery positive#6: Tap to battery negative#7: Draw to vehicle interior and mount on flat surface#8: Tap to headlight positive#9: Tap to headlight negativeSkip this step if you will be using both sets of terminals. Wrap each terminal with electric tape so the points don't touch. Then wrap the white and black wires away from each other to ensure there is no chance of them touching. If you are using both sets of terminals, we suggest using the shorter end on whichever side the battery is situated.Tap the white terminal wire to the positive red wire and the black terminal wire to the negative black wire. Secure the tapping points with electric tape.The fuse is connected to red wire so if your LED light bar short circuits, the fuse will blow and prevent any further damage. The relay acts as a railroad switch, directing the flow of energy to the right direction.The switch comes with double sided adhesive so you can place the button anywhere it's convenient. Start by drawing the switch portion of the wiring from the passenger side to the driver side for ideal cable management. Locate the rubber cover on the driver side and open the firewall cover. Insert the switch from the engine bay into the interior.The red wire is tapped into the headlight positive wire to protect the car battery from being drained as a result of neglect. More recent models automatically turn off its headlights at night after the car is turned off. Additionally, drivers are less likely to forget to turn off their headlights than push the button to turn off their LED light bars because the latter is not a native function. For these reasons, the red wire is tapped into the headlight positive wire.

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Experts Teach You How to Select LED Lighting Driver Chip
LED lighting has been developed by leaps and bounds in the near future. As a green and clean light source, LED has been widely recognized. LED light source has the advantages of long service life, energy saving, simple and convenient application and low cost, so it will be widely used in home lighting. According to the survey and statistics of OSRAM optical semiconductor company in 2008, the global annual shipment of home lighting lamp holders is about 50 billion.The technology of LED light source is becoming more and more mature, and the luminous lumen per watt is growing rapidly, which promotes its decreasing price year by year. Taking 1W LED light source as an example, the price in the spring of 2008 is one-third of that in the spring of 2006, and will drop to one-quarter of that in 2006 in the spring of 2009.The massive market of LED green lamps and the continuous and stable growth demand for several years will be a super tsunami in the consumer electronics market after VCD, DVD, mobile phone and MP3 in the integrated circuit industry!LED lamps are widely recognized for their superior performance of high energy saving, long life and environmental protection.1. LED high energy saving: DC drive, ultra-low power consumption (single tube 0.03 1W), electro-optic power conversion is close to 100%, and the same lighting effect saves more than 80% energy than traditional light sources.2. Led long life: LED light source is called long life lamp. The solid cold light source is encapsulated with epoxy resin, and there is no loose part in the lamp body. There are no disadvantages such as easy burning, thermal deposition and fast light decay of the filament. The service life can reach 50000 to 100000 hours, which is more than 10 times longer than that of the traditional light source.3. Led benefits environmental protection: LED is a green light source with better environmental protection benefits. There are no ultraviolet and infrared rays in the spectrum, low heat, no stroboscopic, no radiation, and the waste can be recycled. There is no pollution, no mercury. It is a cold light source and can be safely touched. It is a typical green lighting source.Working characteristics of LED light sourceThe VF voltage of LED light source for lighting is very low, generally 2.75 3.8V, and if is generally 15 1400ma. Therefore, the output voltage of the LED drive IC is vfxn or vfx1, and the if maintains a constant current of 15 1400ma. LED light sources used in LED lamps include low power (if is 15 20mA) and high power (if is greater than 200mA). Low power LED is mostly used to make LED fluorescent lamp, decorative lamp and grid lamp. High power LED is used for home lighting, spotlight, underwater lamp, wall washing lamp, street lamp, tunnel lamp, automobile work lamp, etc. Power LED light source is a device driven by low voltage and high current. Its luminous intensity is determined by the current flowing through the LED. Excessive current will cause LED light attenuation, and too small current will affect the luminous intensity of LED. Therefore, the driving of LED needs to provide constant current power supply to ensure the safety of high-power LED and achieve the ideal luminous intensity. In the field of LED lighting, in order to reflect the characteristics of energy saving and long life of LED lamps, it is very important to correctly select LED Driver IC. Without good matching of driving IC, the advantages of LED lighting cannot be reflected.Requirements of LED lamps for low voltage drive chip1. The nominal input voltage range of the drive chip shall meet DC 8 40V to cover a wide range of application needs. The withstand voltage capacity should be greater than 45V. When the input is AC 12V or 24V, the output voltage of the simple bridge rectifier will fluctuate with the grid voltage, especially when the voltage is high, the output DC voltage will also be high. If the drive IC does not have a wide input voltage range, it will often be broken down when the grid voltage rises, thus burning the LED light source.2. The nominal output current of the drive chip shall be greater than 1.2 1.5A. As an LED light source for lighting, the nominal working current of 1W LED light source is 350mA, and the nominal working current of 3W LED light source is 700mA. The high-power LED light source needs more current, so the driving IC selected for LED lighting lamps must have sufficient current output, and the driving IC must work in the best working area of 70 90% of the full load output when designing the product. The driving IC with full load output current does not dissipate heat smoothly in the narrow space of the lamp, which is easy to lead to fatigue and early failure of the lamp.3. The output current of the driving chip must be kept constant so that the LED can emit light stably and will not flash. When the same batch of driver chips are used under the same conditions, the output current should be as consistent as possible, that is, the discreteness should be small, so as to ensure the effectiveness and order in the production of large-scale automatic production line. For the drive chip with a certain discreteness of output current, it must be selected by grades before leaving the factory or putting into the production line. Adjust the resistance value of the current setting resistance on the PCB board to make the constant current drive board of LED lamps consistent with the luminous brightness of similar LED light sources, so as to maintain the consistency of the final product.4. The package of the driving chip shall be conducive to the rapid heat dissipation of the driving chip die. For example, the bare chip shall be directly bound to the copper plate, and a pin shall be directly extended outside the package, so as to facilitate the rapid heat conduction directly welded on the copper foil of the PCB board (Fig. If a chip similar to 4x4mm needs to pass 300 1000mA current for a long time, it will inevitably generate power consumption and heat generation. Therefore, the physical heat dissipation structure of the chip itself is also very important.5. The anti EMI, noise and high voltage capability of the driver chip is also related to whether the whole LED lamp product can successfully pass CE, UL and other certification. Therefore, when designing the driver chip, it is necessary to select advanced topology structure and high voltage production technology.6. The power consumption of the drive chip shall be less than 0.5W, and the switching frequency shall be greater than 120Hz to avoid power frequency interference and visible flicker.In short, led green lighting promotes the development of driver chip to innovative design. LED lighting is inseparable from the driver chip, so a multifunctional LED light source driver IC is required. If AC power supply below 36V is selected for LED lamps, non isolated power supply can be considered; If 220V and 100V AC power supply is selected, isolated power supply shall be considered. The direct use of AC 100 220V driver chip has higher technical requirements and greater difficulty due to the demanding volume requirements of the application. At present, all countries are trying to develop it. The massive demand market for LED lamps gives all IC design companies a chance to succeed again. If they can make rapid transformation and produce products early, they will have a lot of opportunities to win.
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