[MUST READ] LED upgrade on 2015-2017 WK2(NO Resistor needed!) - Jeep Garage - Jeep Forum

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View Poll Results: Did you get it work on your 2014+ WK2
Yes. 10 52.63%
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  #1  
Old 09-26-2016, 11:31 PM
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[MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

NO LOAD RESISTOR NEEDED for this specific brand! Reason? I measured with my multimeter, it drains 0.546 Amp current from the electric system so the BCM (Body Control Module) thinks there is no missing bulb. With a typical LED bulb on Amazon usually drains 0.15Amp - 0.26Amp (150mA - 260mA) (but this highly depends on the bulb you purchase) current which may not big enough in order to get rid of hyper flashing, that case you WILL need to tap a load resistor to the wire. WK2 (2014+) owners, go ahead plug and play.

For my initial installation last month, I had a pair of smaller output rear turn/brake 3157 LED made by Sylvania, a pair of JDM 3030 chiset 7443 Amber LED for front turn/parking signal. These two WILL cause hyper flashing as they only drain 0.151amp from the battery. I installed 8ohm load resistor for each of the rear 3157 LED to fix the hyper flashing. But after switching to the new ones, I detached the resistors as they get really HOT - 212F/degrees as I measured!

2011-2013 WK2 owners: sorry I don't have those to test with, if you can please update some information down below.




https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

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  #2  
Old 09-27-2016, 03:19 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

nice find. I see on the 7443s where it says power consumption is 6W but do not see anything on the 3157s...was there anything on the package?
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Old 09-27-2016, 03:42 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

Quote:
Originally Posted by botlfed98 View Post
nice find. I see on the 7443s where it says power consumption is 6W but do not see anything on the 3157s...was there anything on the package?
No, there is nothing about any specification on the package. As you may've noticed there are tons of LED bulbs on Amazon, I was just lucky enough to get my hands on this type, and, I have just bought a multimeter last month to measure the current.

I won't trust any of those wattage mark on the package, sometimes they just use an equivalent wattage to halogen bulb to give customers idea of how bright it is. Always reference to the Lumen/flux rating coz that would be a more accurate information. Plus, u can reference to LED SMD spec sheet to look up all LED chip brightness and power specs, for example, the bulb I test uses 33SMD 5730chip, according to the chart it outputs 30-45lm flux, which will gives you 990-1485lm flux for each bulb. But careful when you calculate the current, you can't simply multiply 33*150mA, as not all 33chips are connected in series. You will have to use a multimeter to test it out.


https://en.wikipedia.org/wiki/SMD_LED_Module
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  #4  
Old 09-28-2016, 02:59 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

$20 for amber bulbs...
Might have to pick up a pair and try them on my 2012.

Adding ballast resistors to the rear was easy for my Acme RedRocket 3157 bulbs (bolted to the pinch weld underneath) because I could use an aftermarket trailer harness so that I did't have to cut/splice into the OEM harness.

Which is why I didn't put LEDs in the front marker/turn position. No such harness available (different connectors).

For $20 these are worth checking out.
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  #5  
Old 09-28-2016, 03:24 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

Quote:
Originally Posted by Todd3.6 View Post
$20 for amber bulbs...
Might have to pick up a pair and try them on my 2012.

Adding ballast resistors to the rear was easy for my Acme RedRocket 3157 bulbs (bolted to the pinch weld underneath) because I could use an aftermarket trailer harness so that I did't have to cut/splice into the OEM harness.

Which is why I didn't put LEDs in the front marker/turn position. No such harness available (different connectors).

For $20 these are worth checking out.
Sure keep us updated. But I have not tried on 2011-2013, the BCM could be different who knows.
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  #6  
Old 09-28-2016, 04:19 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

Quote:
Originally Posted by lbyinchina View Post
Sure keep us updated. But I have not tried on 2011-2013, the BCM could be different who knows.
Ordered, should be delivered on Friday...
Keeping my fingers crossed as this is the last incandescent bulbs I have on my Jeep (besides the glove box bulb).
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Old 09-28-2016, 08:30 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!

Quote:
Originally Posted by Todd3.6 View Post
$20 for amber bulbs...
Might have to pick up a pair and try them on my 2012.

Adding ballast resistors to the rear was easy for my Acme RedRocket 3157 bulbs (bolted to the pinch weld underneath) because I could use an aftermarket trailer harness so that I did't have to cut/splice into the OEM harness.

Which is why I didn't put LEDs in the front marker/turn position. No such harness available (different connectors).

For $20 these are worth checking out.

Buy em and let me know!
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  #8  
Old 09-28-2016, 09:41 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

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Old 09-30-2016, 07:51 AM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

i have 7443 switchback leds i tried installing 8ohm and 6 ohm resistors but still get bulb out error and hyper flashing any help ?
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  #10  
Old 09-30-2016, 09:48 AM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

Quote:
Originally Posted by ahmaddoski View Post
i have 7443 switchback leds i tried installing 8ohm and 6 ohm resistors but still get bulb out error and hyper flashing any help ?
Questions:
#1 - did you use a voltmeter to ensure you were hooking up the ballast resistors onto the turn signal circuit and not the marker light circuit? (and make sure you have a good ground)

#2 - did you hook the resistors onto the front marker/turn circuit wires (under the hood). The Grand Cherokee has 4 individual turn signal circuits, one for each corner.

#3 - check to ensure that the outside bulbs are actually flashing. When I installed Acme Red Rockets into my rear stop/turn/marker positions, the stop/turn was not working. I had to use a sharp probe to reach into the bulb socket and bend the contacts out slightly so that they would make contact with the LED bulb contacts. Most of the LED bulb bases are just slightly smaller than the OEM glass bulb contacts.
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Old 09-30-2016, 09:55 AM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

Quote:
Originally Posted by ahmaddoski View Post
i have 7443 switchback leds i tried installing 8ohm and 6 ohm resistors but still get bulb out error and hyper flashing any help ?
Why are you installing switchbacks?
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  #12  
Old 09-30-2016, 12:26 PM
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Re: [MUST READ] LED upgrade on 2014-2017 WK2(NO Resistor needed!)

Status Update:
They do NOT work in a 2012 Grand Cherokee.

Installed one LED and it flashed normal for 3 flashes, then went to a fast flash condition.

The funny thing was that I had to cycle the ignition to stop the fast flash after reinstalling the OEM amber bulb.

Oh well.
Glad Amazon has an easy return policy.
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