Alright gentlemen, here's the follow-up:

First off, here are the pictures of the aftermarket Hazard / flasher for my '04 Jeep Liberty:

When I installed this aftermarket part into truck the flash rate was much higher however as soon as I tested it with all the exterior (and cabin courtesy) LED lights the rapid flash problem still persisted. Initially, I replaced the headlights, interior to LED. Right away I noticed that when I turned on the engine and began driving, the interior LED lights dimmed but did not completely power off while the vehicle is running. As soon as I shut off the engine and exit the Jeep the interior lights would dim slowly and then turn off.

I modified the OEM switch with a 0.5 ohm 3-watt resistor as the gentleman in this thread suggested:

I went ahead and replaced the headlights, directional, reverse, stop, side marker and interior incandescents bulbs to LED. As soon as I replaced the aftermarket and installed the modified OEM switch everything appeared to go back to normal HOWEVER I noticed a peculiar behavior when I switched on the headlights:

https://www.amazon.com/gp/product/B01A4 ... UTF8&psc=1

https://www.amazon.com/gp/product/B00JR ... UTF8&psc=1

These 3157 LEDs when lit continuously (headlights on) cause both directional indicator lights in the instrument cluster to remain steadily lit dim even when the flasher is turned on.

I figured out why this is happening by replacing the front side marker directionals with these: https://www.amazon.com/gp/product/B07K9 ... UTF8&psc=1

These LEDs have built-in load resistors which stopped the problem resuming back to normal.

Either way this is a learning experience.

I decided to go ahead and replace ALL of the remaining old bulbs in my truck for LED which are the instrument cluster, climate control panel and transmission shifter lights.

It's been trial and error as what is believed to work and what actually does.

For example: https://www.amazon.com/gp/product/B072X ... UTF8&psc=1

These bulbs Amazon and the manufacturer state will fit the instrument cluster which is incorrect. Those lights fit the climate control panel.

These are the correct ones for the instrument cluster: https://www.amazon.com/gp/product/B07MK ... UTF8&psc=1

The other thing I have to warn all of you that the instrument cluster lights type B8.4D are quite fragile. The metal contacts can break quite easily. I bought 20 just to be on the safe side and I ended up breaking 6 of them. They are also non-canbus meaning they will work only one polarity.

When installing the LEDs, I had to bend down the top metal contacts leaving a small gap between them and the lower contacts at the LED's base so they were able to make connection with the electrical surface of the instrument panel's electronic board and were a snug fit. Use a small flathead screwdriver and a set of thin pliers to gently set in and turn until they are snug fit coming to a complete stop. Don't force.

Connect and test the cluster each time as you may have to remove each LED and turn 180 degrees for the correct polarity to light up.

The lights for the climate control panel are T4/T4.2 Neo Wedge. These are easier however you have to push in as you turn when installing. Again, test and verify they work.

I finally finished replacing all of the incandescents for LEDs in my '04 Liberty.









This was a challenging but not a difficult project. One thing I do agree with Mr. Waddy is that it is necessary to modify the hazard switch with a resistor as these lights pull so little amount of energy that they will throw off the vehicle's PCM electrical system.

As you can see they are way brighter. I love it.

FWIW I soldered in a .33 ohm (orange orange silver gold) resistor today. It solved the hyper flash and I ran it for a minute or 2, and the flasher housing got a little warm, but no hot smell. As of yet, I only have the ARB LEDs up front, but i hope to add some in back because the rear lights tend to scorch the housing with heat. The LEDs on autozone website had terrible reviews, hopefully there are some good bright ones available?

Thanks! I was going to look at them. My wifes 2009 Honda fit was eating all headlight bulbs until I retrofitted a set of the Superbrights, and like the name they are much brighter which was an added bonus as her night vision is pretty bad...

Makes sense. So I guess they have us covered for all of the bulbs in the rear of the jeep? Will be nice to not have to change them for several years with any luck!

Yep. I've converted all of the external lighting (except for the head and fog lights) to LEDs using their bulbs, so you should be able to find everything you need under one roof.

FWIW I soldered in a .33 ohm (orange orange silver gold) resistor today. It solved the hyper flash and I ran it for a minute or 2, and the flasher housing got a little warm, but no hot smell. As of yet, I only have the ARB LEDs up front, but i hope to add some in back because the rear lights tend to scorch the housing with heat. The LEDs on autozone website had terrible reviews, hopefully there are some good bright ones available?

Did you replace all of the lights with LED? I am curious how your KJ Jeep is running with the higher Ohm resister modified in the hazard switch?

(I realise this was directed at Mountainman, but figured I'd answer with my experience as well.)

All exterior lights on our KJ except for the headlights have been converted to LEDs at this point - and the headlights are in the process of being converted. Once they're done, that'll be everything on the outside.

The hazard switch mod has been in place for almost two years, and there appear to be no problems as a result. Everything works as normal, just... LEDier

The reason I am asking is because I decided to check my 'mod' of the hazard switch and I noticed that the 0.5 ohm 3-watt resistor I had installed has started to deteriorate. As a precaution, I am looking to replace it.

Although it initially functioned pretty well, I noticed that when all of my lights were on for night time use, in the instrument cluster the left driver side directionals lights would be off at first but then would slowly power back on dimly lit. I am guessing that the Ohms of the resistor is not enough.

Just wondering if 0.33 ohm is the better choice, and by your answer it appears so.

Just out of curiosity, how did you determine that it was deteriorating?



That's... Odd. To verify that I'm understanding correctly: when you hit the left turn signal (or turn on the hazard lights), the amber turning lights on the outside take time to power up and start flashing? I understand (I think) what you're saying re: the instrument cluster, but does that behaviour translate out to what's happening on the lights on the outside of the vehicle?



Not necessarily. While lowering the resistance would cause more current to flow, if something in the circuit is causing problems then changing the resistor may have little to no effect.

The thing that makes me suspect that it's possibly not the resistor is that it sounds as though you're not seeing any problems on the right-hand side. Since the resistor is used for both the left- and right-hand side turn signals as well as the hazard lights, an issue that is specific to the left-hand side should also be duplicated on the right if only the resistor is the issue.

Check grounds, bulb sockets, wiring, etc. along the left-hand side lighting. Also, you may want to try removing bulbs one at a time and seeing what happens with the indicators as each one is taken out; LEDs can have internal failures that aren't necessarily obvious but that can cause some weird issues.

It's also possible that the left-hand-side relay or microcontroller in the hazard switch has gone bad, but let's stick with the stuff that is more easily traceable for now.

I took the hazard switch out when I removed the radio & climate control out of the center console. I checked the hazard switch modification of the added resistor and noticed that it started essentially "flaking off'.

And NO, it is not the outside amber lights. They function fine. It is the instrument cluster LEFT directional indicator light that SLOWLY lights up when the headlights are switched on.

I've checked all the wiring tracing any shorts or splits / damage....nothing. I am going to switch out the smaller LEDs the front turn signal reflectors as they appear to be slowly dimming.

Yep, sounds like a bum resistor; at least it's an obvious problem. My suggestion would be to stick with a 0.5Ω one for its replacement - 0.3Ω may be bit too borderline for preventing hyperflash. YMMV, though.



Interesting. More:



Re: the LEDs currently in the front turn signal reflectors: are they the type that always run at low intensity when the headlamps are on, but alternate between low and high intensity when the indicator is turned on?

If you swap out both of the bulbs you're referencing with incandescents, does the problem go away? It's sounding as though there may be one or more malfunctioning LEDs in there, but that resistor is clearly an issue as well so there isn't one clear culprit to point a finger at right now.

Just out of curiosity, what year / model is your KJ?