KC H4 Halogen Light Conversion - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-10-2019, 12:00 AM
Thread Starter
  #1
Jeeper
 
Join Date: Sep 2019
Location: Wheeling WV
Posts: 20
KC H4 Halogen Light Conversion

I was ready to "pull the trigger" on a set Mopar 2017 LED headlights come payday. But I started reading about the issues of the LED headlights getting covered with snow from the lack of heat. That's not acceptable for me in my area.

Anyhow this morning, I installed a KC HiLite H4 Halogen conversion kit along with a set of Sylvania Silver Star Ultra 9003 H4 bulbs.
I didn't have time to check the aiming of the new lights before work, but I'm amazed how much better the low beam was tonight.
Before, I had to use the fog lights all of the time to supplement the poor factory low beams. Now using the KC low beams, I can't hardly tell that the factory fog lights are even turned on.
The high beams are different story, I wasn't really impressed with them as they seemed way too high. I really need to find an area with a wall to properly aim them.
Any aiming advice?

iwasjeepdan is offline   Quote
Old 11-10-2019, 02:00 PM   #2
Jeeper
 
PeedoPie's Avatar
 
Join Date: Nov 2016
Location: Northern NJ
Posts: 108
I tried the KC H4 conversions for two days before I changed them out. I had fitment issues where once the retaining rings were screwed in, the lights still wiggled a little bit. If you look at the tabs on the lights that match up to the factory buckets, the tabs are a little too small causing the movement. I used electrical tape to make them fit more snug. Then like you noticed, the high beams were horrendous. I aimed them correctly. The low beams were wider than factory which was good, but the highs were up in the trees and not useful. I returned them and ordered a set of the Quadratec LEDs by JW Speaker. Thrilled with those. The pattern is a little weird at first, but when you get on a straight road, you realize the pattern is awesome for sitance and edge lighting. The highbeams are really bright and easily extend out several hundred feet lighting up everything

__________________
2017 2dr hardtop Sport S in Granite Crystal, 6 speed with 3.73. Bestop Sunrider. 77Kick10s and 77Kick25s.
PeedoPie is offline   Quote
Old 11-10-2019, 11:44 PM
Thread Starter
  #3
Jeeper
 
Join Date: Sep 2019
Location: Wheeling WV
Posts: 20
Thanks for the reply.
That's odd, as mine were almost a too snug of a fit.

I'm not giving up on these until I make an honest attempt at aiming them.

Before I do, I guess that I will add the horizontal adjusting screw modification as I have just learned about after reading some old posts on the Cibie H4 lights.
iwasjeepdan is offline   Quote
Sponsored Links
Advertisement
 
Old 11-11-2019, 05:28 AM   #4
Jeeper
 
603BruinsFan's Avatar
 
Join Date: Mar 2018
Posts: 54
Installed these yesterday w/the bulbs that come with the kit - not impressed at all. Are the Silverstar considered the best for the H4 bulbs?

Adjusted them for height but they seem like they don't have as much spread as the stock bulbs.
603BruinsFan is offline   Quote
Old 11-11-2019, 08:34 AM
Thread Starter
  #5
Jeeper
 
Join Date: Sep 2019
Location: Wheeling WV
Posts: 20
Quote:
Originally Posted by 603BruinsFan View Post
Installed these yesterday w/the bulbs that come with the kit - not impressed at all. Are the Silverstar considered the best for the H4 bulbs?

Adjusted them for height but they seem like they don't have as much spread as the stock bulbs.
I don't know for sure.
I had read some older threads on the KC conversion stating that the supplied bulbs weren't that great.
With that knowledge, I had a set of Silverstars purchased ahead of time, ready to go in before installing the light assemblies.
According to the part numbers on the KC bulbs that I removed, they are the lowest grade H4 that Philips makes.

I think that the spread of light would be determined by the KC reflector housing.
Not happy with the dark spots projected by the high beams either.
iwasjeepdan is offline   Quote
Old 11-11-2019, 12:15 PM   #6
Jeeper
 
603BruinsFan's Avatar
 
Join Date: Mar 2018
Posts: 54
Quote:
Originally Posted by iwasjeepdan View Post
I don't know for sure.
I had read some older threads on the KC conversion stating that the supplied bulbs weren't that great.
With that knowledge, I had a set of Silverstars purchased ahead of time, ready to go in before installing the light assemblies.
According to the part numbers on the KC bulbs that I removed, they are the lowest grade H4 that Philips makes.

I think that the spread of light would be determined by the KC reflector housing.
Not happy with the dark spots projected by the high beams either.
Thank you for that, I'll have to trek to the auto parts store
:-)
603BruinsFan is offline   Quote
Old 11-11-2019, 04:44 PM
Thread Starter
  #7
Jeeper
 
Join Date: Sep 2019
Location: Wheeling WV
Posts: 20
Ok,
Using the aiming process described on the Daniel Stern Lighting website,
I discovered that my passenger side headlight was grossly off horizontally.
I don't understand how it could have been so far off.
I rechecked to make sure that I had the KC light seated in the bucket ring, it was fine.

At the 25' distance from the wall, the beam was directly on the vehicle center line. That's 18.5" to the left of where it should be. I could really tell it with the high beams on.
I slotted the head of the horizontal pin with a Dremel as others have done, so that could screw that pin out to adjust the headlight to the right.

Vertically, I didn't know how far to set the cutoff below the headlight center height, so I will try 3.5" @ 25'.
Now to test in the dark.
iwasjeepdan is offline   Quote
Old 11-11-2019, 06:54 PM   #8
Jeeper
 
603BruinsFan's Avatar
 
Join Date: Mar 2018
Posts: 54

Got the Silverstar Ultra - will install this week sometime when I feel like taking apart the whole dang thing again.

603BruinsFan is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






All times are GMT -5. The time now is 09:20 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

Jeep, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.