Using LEDs in the front fender side-markers on a Jeep Wrangler TJ


Tim Redman

TJ Enthusiast
Joined
May 25, 2018
Messages
145
Location
Tampa Bay, FL
Is there a ground connection or something between the front turn signal/fender lights and the tail lights? With the LED relay in, I put LEDs in the tail lights, normal bulbs everywhere else (the interior and dash lights are LED).
  • When the left turn signal is on, the lights on the dash dim in time with the flasher (including the odometer), the front passenger side turn signal blinks very dimly, and the driver's side turn signal blinks normally.
  • When the right turn signal is on, the dash lights dim and the passenger side turn signal flashes, but the driver's side turn signal stays off.
Repeatable with the normal flasher relay in, only hyper speed.

Also, as a side note, if I put LEDs in the turn signals, I blow fuse 7 every time they try to light up (flashers or running lights).
 

Ephry73

TJ Enthusiast
Supporting Member
Joined
Nov 11, 2019
Messages
737
Location
10603
Is there a ground connection or something between the front turn signal/fender lights and the tail lights? With the LED relay in, I put LEDs in the tail lights, normal bulbs everywhere else (the interior and dash lights are LED).
  • When the left turn signal is on, the lights on the dash dim in time with the flasher (including the odometer), the front passenger side turn signal blinks very dimly, and the driver's side turn signal blinks normally.
  • When the right turn signal is on, the dash lights dim and the passenger side turn signal flashes, but the driver's side turn signal stays off.
Repeatable with the normal flasher relay in, only hyper speed.

Also, as a side note, if I put LEDs in the turn signals, I blow fuse 7 every time they try to light up (flashers or running lights).
Did you do the mod for the LED relay, or get one of the LED relays installed?
 

JacksonH

New Member
Joined
Aug 11, 2020
Messages
11
Location
Flagstaff AZ
Rather than cut the wires to the side marker light I made a patch cable that will do the same thing. Way more easier to build the circuit, no cutting of wires, and it's reversible.

When the adapter is installed you may run into the following issues.
If the LED does not light at all, you need to spin the bulb 180 degrees in the socket.
If the LED does light but it is bright, you need to rotate the plug into the factory socket by 180 degrees.

The second if statement has to do with the default mode of the side marker is dim, and when it flashes it gets bright. If you put the plug into the factory socket the wrong way the bulb will always be bright, even when it flashes.

If you want to build this circuit like I did here's the parts you will need the following additional items to your BOM.

194 Male Sockets
https://www.amazon.com/gp/product/B07WTZMNZL/?tag=wranglerorg-20

194 Female Sockets
https://www.amazon.com/gp/product/B07H8F322J/?tag=wranglerorg-20

Here's what it looks like. I haven't tested it yet but I did build the circuit exactly Steel City 06 described.
View attachment 169551
Did they work for you? I need to do this to my Jeep
 
Joined
Jul 20, 2020
Messages
46
Location
Charleston SC
I'm not sure all this hoopla over LED is worth it at least on my 98. The dash doesn't dim like incandescent though the ice blue looks good, it's fairly bright at night,, side markers have to be incandescent or else a re-wire, made from China LEDs fail more often than incandescent so you end up replacing them more often. I've personally had better results replacing the lenses on the exterior lights and going back to incandescent on the interior but I'm a stock kinda guy.
 
Joined
Jul 20, 2020
Messages
46
Location
Charleston SC
Here is some other options and, you can go on Amazon and get covers of the color of your choice that go over the incandescent white lights for the 74s
20200916_115323.jpg