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  #13  
Old 01-19-2012, 01:05 PM
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Re: LED Stop/Tail/Turn Install

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Originally Posted by barrette's jeep View Post
Would it work w a trailer plug on, could the trailer be like a second resistor ...
Well that's an interesting thought... I would be weary of tapping into any exterior wires on the car due to issues around here with salt, but in theory it should work for the all the lights except reverse.
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  #14  
Old 01-19-2012, 08:53 PM
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Re: LED Stop/Tail/Turn Install

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Originally Posted by DannyG View Post
Over the past few weeks I've changed out all of my exterior bulbs for LEDs with the exception of the turn signals. These of course require some resistors to keep things operating as usual. I haven't had a chance to work on the front yet, but this is how I installed the rear set:

I chose lights and resistors from www.autolumination.com, I've had a full set installed in my '03 Wrangler for years with no problems. The S/T/T lights I picked for the rear are 3157 SMT Towers with 120 LEDs total (pic 1). These lights fit through a stock 3157 housing but are unusually long. There are no clearance issues in the lens so I figured the more the better. Because I haven't seen any write-ups on this yet, I wanted to test everything out before I started cutting the factory wiring. The Curt 56009 trailer harness (pic 2) provided all the connectors needed.

The harness comes with two sets of connectors, one pair for each side. It is intended to be installed between the factory wiring harness and light socket on each side. I cut off the 4-pin trailer connector and excess wire and used the turn signal wires to connect my resistors. The resistors I used are 6 ohm/50 watt and came with the leads soldered on. I soldered connectors on each end and also to the turn signal wires from the harness as well (pic 3). The green and yellow wires are for the turn signals; brown (tail lights) and white (ground) aren't needed for this project. The white wire isn't connected to anything so it comes completely off. the brown wire is connected to one of the molded connectors so it needs to be cut and safed off. I used liquid electical tape to cover all the connections.

Removal of the lens housing is easily done by pulling out the two fastners in back and pulling the housing straight back. The light sockets come out as usual with a quarter turn. I drilled and tapped an 8-32 hole in the body behind the housing to be used for the ground connection (other side of the resistor). I mounted the resistor on double-stick tape and then screwed it in with self-tapping screws. The double stick tape is just to provide a barrier between the resistor and the paint in case it gets really hot, but I doubt it is necessary. Everything then just plugs in and the completed wiring is shown in pics 4 and 5 (passenger side) and pic 6 (driver's side). Everything fits (snuggly) and the housing can be reinstalled as usual. A finished close up of the illuminated light is shown in pic 7.

I chose to use a 6 ohm resistor for each light as opposed to a 3 ohm resistor to cover both front and rear on each side. When you pull the bulb, the EVIC tells you specifically which bulb is out so I don't think one resistor per side will work, however I haven't tested it.

The whole install took about an hour and has been working nicely for a few days now. I'm planning on pulling off the housing again in a few days to make sure the heat of the resistor isn't doing any damage. I'll post a follow up if there is anything worth mentioning.

Have you removed either taillight since the install to verify the mounting location is safe for the resistors and the heat they generate ? Any exposure to the lamp housing itself or any wiring ? Thanks
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  #15  
Old 02-25-2012, 04:41 PM
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Re: LED Stop/Tail/Turn Install

bump.
is this location safe for the resistor? I am about to do the same mods to mine.
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  #16  
Old 02-25-2012, 05:10 PM
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Re: LED Stop/Tail/Turn Install

I installed this a while ago, had no problems so far. I'm going to give it another week before I take the lights off again and see if everything is kosher inside (no melting plastic)

From installing, as shown in these pictures, the area I placed mine seems to be the area farthest away from the housing and wires. just make sure you pull any wires away from where it is mounted and it should be fine right there.

The spot is right where the sheet metal curves in where it conforms to the shape of the housing. Just to the right of the curve it is flat enough to stick it on. I had not used any sheet metal screws just so I didn't have to drill into my car, and used the adhesive instead to hold it in place. With the heat that comes off the resistor, it should stay nice and stuck as the heat should cause the adhesive to really stick hopefully.

Hope this helps.
Attached Images
File Type: jpg LEDinstall.jpg (105.6 KB, 171 views)
File Type: jpg LEDinstall2.jpg (484.3 KB, 170 views)
File Type: jpg LEDinstall3.jpg (409.3 KB, 157 views)
File Type: jpg LEDinstall4.jpg (506.0 KB, 146 views)
File Type: jpg LEDinstall5.jpg (99.4 KB, 149 views)
File Type: jpg LEDinstall6.jpg (82.1 KB, 155 views)
File Type: jpg LEDinstall7.jpg (484.7 KB, 156 views)
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  #17  
Old 07-24-2012, 10:56 PM
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Re: LED Stop/Tail/Turn Install

I just added leds to my taillights, i mounted the resistors in the same place as dannyg and everything seems to work fine,ill be pulling the lights back out in a few days to install some brighter leds so ill see if i need to adjust anything. I dont understand why my compass had led taillights and the grand cherokee being a more expensive vehicle doesn't... what is up with that?
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  #18  
Old 07-25-2012, 10:06 PM
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Any night pics Danny?
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  #19  
Old 10-01-2012, 10:45 AM
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Re: LED Stop/Tail/Turn Install

Freakin' brilliant!
I did the same thing with my Ford Five Hundred years ago to adapt the Montego LED tail lights. Works like a charm. The key thing is to put the resistor some place where it won't melt anything. BONUS: no cutting the OEM harness (or using the wire splicers).
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  #20  
Old 10-26-2012, 10:00 AM
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Re: LED Stop/Tail/Turn Install

Great write ups guys! I've done LED conversions in the past, but i was able to source an electronic flasher to take care of the flash rate and remove the need for resistors. Honestly, i don't understand why LED tails weren't standard on the JGC. I see them in most of the other Chrysler vehicles on the road.
I really like the use of the trailer wiring harness to save from cutting into the OEM wiring. I've already upgraded to LED in the reverse and license plate lighting. When i do the S/T/T i may also wire in a couple of LED backup lights on a separate switch to help out at night with backing up...and those who like to tailgate.
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  #21  
Old 11-07-2012, 05:30 AM
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Re: LED Stop/Tail/Turn Install

I was wondering if i need a resistor for the rear turn signal? and i would like to know what socket it is, a picture of the socket would be helpful as well.

Thanks!
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Old 11-07-2012, 08:57 AM
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Re: LED Stop/Tail/Turn Install

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Originally Posted by Mgardner View Post
I was wondering if i need a resistor for the rear turn signal? and i would like to know what socket it is, a picture of the socket would be helpful as well.

Thanks!
Even though there's no flasher involved, i would think the computer would still like to see that same resistance in the system in order to function properly. In previous experience, if you replace just the front or rears with LED, you'll get the fast-flash but the system will still work. If you replace both of them, it stops working all together.
The socket it very easy to get to, just pull the tail light and take a look.
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  #23  
Old 03-04-2013, 01:17 AM
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Re: LED Stop/Tail/Turn Install

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Originally Posted by yodamel View Post
bump.
is this location safe for the resistor? I am about to do the same mods to mine.
I'm only a year late on this response, but I think it's safe. On every vehicle where I replaced the tails with LED's and required a resistor, I just screwed the resistors onto the body itself behind the tail light housings. Never had an issue.
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