# FAQ: How To Wire Lights On A Tractor?

## Do I need a relay to wire a LED light bar?

A relay is an electrical switch that lets a low current circuit control a high current circuit such as a large LED light bar. If you are using a light pod that does not have a very large amp draw, you may not need a relay switch, but if you are using a larger LED light bar, they are a must have.

## How do you wire a 12 volt light?

How to Wire a 12V Light

1. Connect a positive wire to a fused positive terminal in the power distribution panel.
2. Connect a negative wire to a terminal on the negative busbar in the power distribution panel.
3. Connect the positive wire to the positive wire on the light by means of a lever nut.

## What size fuse should I use for LED lights?

75mm is good for about 7.5 amps max. I generally like to have at least 100% extra rating so a 3 amp fuse max is what i would use. This should be plenty for 4 leds. If you have working leds but blow a 10A fuse i think your wiring needs checking and you will probably find your fuse is directly across the battery.

## What are the 3 wires on LED lights?

Generally a white and a black wire will be provided. The white will normally be the ground(-) and the black will be the positive(+). LED Lights with 3 wires will be a multi-function light.

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## How many LEDs can a 12V battery power?

So, a 12V battery wired to four 3V LEDs in series would distribute 3V to each of the LEDs. But that same 12V battery wired to four 3V LEDs in parallel would deliver the full 12V to each LED – enough to burn out the LEDs for sure! Wiring LEDs in parallel allows many LEDs to share just one low voltage power supply.

## Can you use a 120v switch for 12V?

Yes, you can use a 120v switch for a 12v application. The 120v is the max voltage rating of the switch, which states that it can handle voltages up to 120 volts. If you will be using the 120v switch in a 12v application this will not be a problem, as the 12 volts is well under the rating of the 120v switch.

## Can you use normal light switch for 12V?

Yes, a standard household light switch will work on 12V if wired correctly,but it sounds like you hooked both wires from the battery to the switch!!