02_Black_On_White

Hey guys, when I installed my light bar I noticed a horrible whistle/vibration coming from the cooling fins on the back of the light bar. After doing a bit of research I found out that its an extremely common problem with light bars, there are a few methods out there but this is the one I found to be the best and least obstructive to the cooling fans. Keep in mind these fans do not even really get warm so you dont have to worry about cooling issues.

Step 1:

You will need to purchase a "Door Sweep" you can get these at your local Home Depot or Lowes, I was unable to find the link to where I actually purchased mine from, but it cost about 15$, they come in 36" pieces so if you have a 50" light bar you will need two of them.



Make sure to get the one with 3M adhesive backing like this..






Step 2:

**If you have a curved light bar you will have to cut the door sweep in 6-8Inch pieces because of the curve, If you have a straight light bar all you will have to do is add a 14" piece to the 36" piece**

Using a sharpie I measured the rubber seal ( for this guide I just used a scrap piece that I had)



Step 3:

Using a pair of scissors I cut the rubber seal as far as I could go, where it meets the aluminum.



Step 4:

Using a metal cutting disk like this...




simply cut the aluminum rib, this can be done using a hand saw if you don't have a cutting disk handy...

Step 5:

Peal the 3m adhesive backing off of the strips and insert the door sweeps into the ***LOWEST FIN POSSIBLE*** We are trying to redirect the wind around the fins which is causing the whistle so it is very important that you install the sweep on the lowest fin possible like this..











I also should mention that this will hold up to the elements and is nearly invisible. It helped me 1000% so I hope it helps.

Rift

This actually get rid of the noise?

02_Black_On_White

yes 100% does

Rift

that. Is badass. That was actually the only reason i wasn't gonna get one. You like yours? And what mounts did you use for that?

02_Black_On_White

i didn't believe it but after doing the fix its completely silent. Its awesome, literally turns night into day. And Nfab mounts.

Rift

that's awesome man. You got a 50" curved maybe? Which one did you get? Looks like it fits the curve of the truck really good

02_Black_On_White

its a rough country bar, i think the new 50" curved is alittle different but they're all the same for the most part

dopewaffle

iTrader: (-1)

Gonna try this tomorrow!

lourias

I fixed that whistle on mine. All I did was put it back at the slight down ward angle that it was originally. Crazy how about a 5 degree angle changed everything.

KnightIRD

Wanting to do this with my straight 50 when it arrives. Any other tips??