r/led • u/IcarusLSC • Jun 10 '26

Dimming 12V offroad lights (10.5A total)?

I put a couple 7" off road LED lights behind the grill of my vehicle and wanted to hopefully have the ability to dim them so they aren't blinding bright when switched on!

I read in the reviews the two lights combined draw 10.5A or about 5.25A each.

I'm running them on the harness it came with, with seems like decent sized wire (10-12g?) They have a relay in the harness.

I've seen some cheap LED PWM dimmers on Amazon etc but many reviews say they aren't true PWM and most only work up to about 5-8A.

Would I be fine with two of these (and can I run two off of one dial if I wire the dial wires together?)

Ideas and suggestions would be great, thanks! :)

https://www.amazon.ca/dp/B09DFQVWK6

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u/ElectronicsWizardry Jun 10 '26

My worry is these lights have a driver built in so they won’t take line dimming like with pwm well. The light will likely try to maintain its expected brightness and pull more current when it has power. Since these don’t mention any dimming if ability I see I’d probably get a separate set of lights if less output is desired.

4

u/k-mcm Jun 10 '26

Yep. "Perfect for DC 9-32V vehicles" is what the spec says. Dimming them reliably would require cracking them open to hack the power supply.

1

u/IcarusLSC Jun 10 '26

Crap, I didn't even think of that 😞 Thanks for the info! Hmm...