Underhood Light Kit for 6th Gen 4Runner

[Trail4R]

KC HiLiTES Underhood Lighting Kit Installation on 6th Gen 4Runner (2025+)​

Finally got around to installing this KC Lights Cyclone lights underhood light kit on the 6th Gen 4Runner.

The factory hood sound-deadening on the 6th Gen has two perfect spots for the KC Cyclones.

Find it online: https://4runnermods.com/products/2-light-universal-under-hood-lighting-kit

Coupon Code "TrailKC" for 10% OFF.

The kit is from KC HiLiTES and comes with everything you need to install the kit out of the box:

• Two Cyclone LED Lights
• Optional Switch if you're mounting it in your engine bay
• L bracket for the switch
• Split braided loom wiring harness
• All the hardware

The process for the installation is super simple. All you have to do is take out the factory push clips with a clip removal tool and then insert either M5 (metric) or 10-24 (standard) nutserts into both open holes. From there, you will then need to remove a few more clips along the top of the factory hood sound-deadening material, slide in the harness, and wire everything up. Very simple installation. Took me maybe 30 minutes from start to finish. I have done this on quite a few 5th Gen 4Runners in the past, though. Here is another reference installation article on the 5th Gen 4Runner. If you've never done this before, it might take you a little longer.

Underhood lights are great for working in and around your engine bay at night. After using them on the trail over the year, I will always have underhood lights. Love this mod.

These lights help when you're airing up at the end of the day at night, or repairing something on the trail at night.

Underhood Light Kit​

Pictured is everything you get in the kit. If you know you don't need the wiring harness and the switch, you can just buy two cyclones. Sometimes it's cheaper and easier, depending on your install and what parts you have lying around. If you're familiar with wiring and plenty of wire, connectors, and heat shrink laying around, then you can opt for just two single cyclones.

Switch Options​

With this kit, you have the option of mounting the switch in your engine bay using the supplied switch and bracket pictured above.

Or, you can remove the KC switch and just run the power and ground directly to your switch panel like a switch pros or Auxbeam.

Let's jump into the installation...

Remove OEM Retainer Clips​

Use a clip retainer removal tool to remove the clips along the top of the sound deadening. You will break these clips. They are not reusable. The cyclones will take the place of the two center clips, and then you will need new clips to push the sound deadening back into place.

Insert Nutserts​

I tested both M5 (metric) and 10-24 (standard) nutserts. Both fit; it just depends on what hardware you have on hand.

Slide the Harness over the Sound Deadening​

Initially, I tried fishing the leads from one side to another, but there are too many odd shapes in the hood to smoothly get a fisher through. So I ended up just removing the top retainer clips, and then I positioned the harness accordingly.

Pull Leads Through Opening​

Pull your Cyclone leads through.

Connect Cyclones and Heatshrink Leads​

Connect the lights and heat shrink as needed. Not mandatory. I always like to heat-shrink the connectors on the cyclones just to add a bit more rigidity to the connections.

Bolt The Cyclones Into Place​

Bolt the cyclones down. Damn dude, how good do these fit right here!!!

 

[Trail4R]

Install New Retainer Clips​

Amazon sells a ton of these retainer clips for pretty cheap.

Lights Off​

Lights On​

 

[Trail4R]

Here are a few finals:

 

[KC HiLiTES]

Bro this is a killer write-up!!! Amazing job, dude. Can't go wrong with a set of Cyclones as underhood lights. Those final shots are fire, too!! Very well done.