DIY LED Light Bar Harness – How-To Make Your Own

In this video I’ll show you how to make and wire your own relay wiring harness for your LED light bar or any other accessory. In the end we’ll have a harness that will include a single relay, a fuse, and a switch, and will power your Light Bars or accessories with the push of a button.

Check out Quadratec and their stuff Here:

More Detail on how-to install your wiring harness:

How-To Solder:

Build your own relay and fuse box for up to 7 accessories:

A good Wiring Diagram from SirGCal and found on the JeepForum Website:

And a Handy Wire Gauge Chart:


*This product is meant for entertainment purposes only. Your mileage may vary. Do not try this at home. Void where prohibited. Some assembly required. For off-road use only. Slippery when wet. Batteries not included. Do not use while operating a motor vehicle, heavy equipment, cherokee XJ, wrangler TJ, wrangler JK, or any Jeep vehicle, especially the newer Fiat ones. How-to videos may be too intense for some viewers and children under 30 years of age. Please remain seated until the 4×4 ride has come to a complete stop. Studies have shown viewing these videos causes increased cancer risks in laboratory test people. I am not a professional, I have no training, I’m not even particularly good at horse whispering. Don’t believe everything that you know. Please keep your hands in the vehicle at all times. Do not tap on glass. Do not eat anything that has been on the floor for more than 3 days. Keep your hands to yourself. Not to be taken internally. Reproduction strictly prohibited. Driver does not carry cash. Objects in Bleepinjeep mirrors may be farther than they appear.*


Tikijake10 says:

Really great video. Can you explain how to wire to the ignition, so that the lights will only work when the key is turned?

Roger C. says:

i only have a switch that has two ports. one to the relay and the other to the ground… but wont work

Paxton Wirtz says:

Most helpful way to understand replays and a 101 for any wiring thank you

Rick Justice says:

fantastic job on that video that was great thank you

Bubba Sawyer says:

bleepinjeep would this work for 52 inch light bar 500 watts, if you use a 40 amp relay. and what size fuse do you recommend

AslanAtreyu says:

Do you have any videos where you demonstrate the constant hot connection?

SuperKiller177 says:

My truck doesn’t have fog lights but it has the switch, could I wire it up to that??

Richard Gonzalez says:

Really appreciate the video!!!

Mike Rivera says:


Asian Redneck says:

Best video I’ve found on YouTube on how to wire a relay, also took your time to let us screenshot the diagram

AntiEverything says:

thank you. very easy to follow. 🙂

Osvaldo Alarcon says:

really helpful thanks man! and bad ass jeep!!

Bubblebath ::o says:

Good video. Best 4×4 channel on the web by far. How would I wire my new lights to a Toyota OEM fog light switch? I have blanks in my 80 series dash where I want to put a toyota fog light switch. I would rather not use a generic off/on switch. Thanks

Maratha Customs says:

Hie , is there any Difference between an Normal Electrical wire & Automotive wire ??

Victor Jacome says:

Very educatioal, easy to understand, the best so far Ihave seen, you shoul be a teacher. Thank you.

Kenneth Dalton says:

any idea you my xj gauge cluster is not working has power and self test works but don’t read anything on any gauge

Esdras Ibarra says:

great video

M Pena says:

Hello if there’s pre wires how do u convert from hot circuit switch to ground circuit switch.

Walter K says:

Oh just noticed this… with the lightbar off, relay terminal 87a will be “hot”.

Maverick Mitchell says:

Big big help, thanks so much!

Cameronishype says:

Well done. Definitely saving me money from buying $20 harnesses and having to wait in the mail! Haha. I appreciate it man. Definitely helped.

Shane Stewart says:

thanks for all the “details!” totally helped me install my led lights on my rubicon!

Gerardoalejandroo says:

Hice lo mismo y se me calienta el fusible hasta quemarse , porque sucede eso ?

Matt Dovi says:

this guy is great, out of the 5 questions I had pertaining to my jeep (JK, but similarities amount many jeeps) 4 of them were answered so well I was able to do it myself. This most recent one here (wire harness) was great because my LED bar came with two fog lights as well and the wiring harness but the wing harness was cheap and i wanted to run the two fog lights and LED bar separately. Went to Advanced Auto and for $30 bought 3 packs of 14 gauge cable, connects, two fuses and relays and 30 amp fuses and was able to make the wiring harness go where I WANTED it to go as well as hook it up to the rockers I had bought.

Ken Adair says:

finally a video that helps me!!! great job man, very helpful!

Lance Hamilton says:

Can you explain the part at 14:00 a little more? Do I plug it into the back of the fuse panel and plug a fuse into that slot? If this is the case, what fuse would I need? 5A fuse be too much?

Curtis Derome says:

How would this work with a 5 pin switch

Sunshine0955 says:

Slowly is key! Well done sir, I totally understand now!

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