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LED Lightbar DIY Answered

Hi folks,

I hope this topic is in the right place. I was going to try my hand at building my own LED light bar like the one in the picture below. It will be around 40" long with 2 rows LEDs and running off a 12v car battery. What W LEDs would you recommend? Also materials, what would you use for the housing, clear front etc?

I was looking at 10w SMD Chips but I'm not sure if they are super bright but then again there are going to be a lot of them in the bar.

They have a operating Voltage of 9-12v, if I have so many of them will i need some sort of amplifier half way down the rows?

Any help with this project would be greatly appreciated,
Thanks in advance.



2 years ago

I would do it this way ( I guess):
1. Get prices for all the materials and parts required.
2. Check availability.
3. Forget about it and just buy a ready to go bar...

Reason for 3. is that these light bars have dropped quite a bit in price.
Around here you get a 240W one for under 200 bucks...


Reply 2 years ago

A few years back I did it the cheap way using a square aluminium profile and LED reversing lights.

Just a few big holes and some fibreglass resing to seal it all....


2 years ago

If you do use those LED's, you might want to buy lenses for them too. You'll also need a pretty big heat sink.