Understanding Rock Light Amp Draw
Common rock lights’ LED pods draw approximately 0.2 to 0.4 amps at 12V. When wiring multiple lights, the total current draw adds up quickly, so it’s important to calculate the combined load to avoid exceeding your wiring harness’s capacity.Wiring Limits to Keep in Mind
Taking the LEDMIRCY R3 Rock Lights Kit as an example, the wiring must follow these limits for safe operation:
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The main wiring harness should not exceed 5 amps total current.
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Each 1-to-6 splitter branch should not exceed 1.8 amps.
How Many Rock Lights Can You Add?
You can calculate the maximum number of lights your wiring can support using this simple calculatorRock Light Wiring Capacity Calculator
However, always consider the limits of individual splitter branches and ensure wiring is done properly with appropriate fusing.
Example Setup Using Splitters
Suppose you already have two 1-to-6 splitters connected to your main harness, powering 12 rock lights. If you want to add more lights, you can:
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Check the current draw before and after expansion
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Add a third 1-to-6 splitter to the main harness
This setup remains electrically safe, as the total current draw stays within the 5-amp limit of the main harness, and each splitter branch remains under the 1.8-amp safe threshold.
However, do not connect one splitter to the output of another, as this can overload a single branch line and cause overheating or wire damage. Always connect each splitter directly to the main harness or a properly fused power source.
FAQ
What happens if I exceed the current rating on the wiring harness?
Exceeding current ratings can cause wiring to overheat, potentially melting insulation, blowing fuses, or damaging components, leading to costly repairs.
Can I run 12 rock lights on one splitter?
No. Most 1-to-6 splitters are designed for up to 6 lights (around 1.8A max). Running 12 lights on one splitter risks overheating.
Should I fuse each branch separately?
Yes. It’s best practice to install fuses on each branch to protect wiring and devices in case of a short or overload.
Can I mix different amp-rated lights in one kit?
Mixing lights with different amperages is not recommended unless you adjust wiring and fusing accordingly to handle the total load safely.
How do I know if my wiring kit can handle more lights?
Check the kit’s maximum current rating (usually around 5 amps) and calculate your total load based on the amperage of each light.
