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.16 Apr 2019
How many amps does a 12V LED light bar use?
LEDs use about one-fifth the power for the same amount of light output. So for your light bar, it would consume one-fifth of the current, i.e. 0.2 amps from a 120 VAC source, or 2 amps from the car battery.
How do you wire a light relay?
https://www.youtube.com/watch?v=0woaEeH4Y5w
How do you install a light bar relay?
https://www.youtube.com/watch?v=2xWbibOn6Z0
Do you need a relay for lights?
When adding LED lights, such as off-road light bars, driving/work lights, or other auxiliary lights to a vehicle, you must add a circuit to power the light adequately. Relays are a cost effective, flexible way of doing this.21 Jul 2016
What is the purpose of a relay on lights?
Relays can be used to switch a low-current trigger to high current, switch a circuit on or off, reverse polarity, and much more. When adding LED lights, such as off-road light bars, driving/work lights, or other auxiliary lights to a vehicle, you must add a circuit to power the light adequately.21 Jul 2016