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  1. #1
    Join Date
    Jun 2010
    City/State
    Lexington, SC
    LJ Year
    2004
    Year Purchased
    2014
    Posts
    358

    Adding the rear view map light & thermometer display

    I had the optional thermometer and map lights on the rear view mirror on my first 2004 LJ. Was a really nice feature that I miss now.

    When I bought this wrecked 2006 LJ rubicon I noticed it did not have it on it. Just thought it was standard but apparently not. Fortunately, I happened to notice the sensor up front in the grill and the wiring harness pigtail was right in center of dash under that black dash trim piece. So, found a mirror and attached harness from a wrecked one and it should arrive soon. Will be walking through the upgrade piece once I get it.

    Anyone else done this upgrade/mod?

    Matt

  2. #2
    Join Date
    Dec 2010
    City/State
    Elmira, NY
    LJ Year
    2006
    Posts
    504

    Re: Adding the rear view map light & thermometer display

    I've done it. You're lucky you have the harness under the dash, my LJ (the Retro Wrangler) did not have the wiring harness under the dash, so I had to add that to mine as well.

    There should be two sensors behind the grille. One is the ambient temperature sensor which is input to the engine computer, the other is the temp sensor for the mirror. If you only saw one sensor behind the grille then it's not the one you want.

    When I installed a temp/compass mirror in the Retro, I found a compatible temp sensor in the junkyard, it was on a GM vehicle. I may have photos of the GM sensor, so it you need a sensor let me know and I'll dig up whatever info I have on it.

  3. #3
    Join Date
    Jun 2010
    City/State
    Dexter, MI
    LJ Year
    2005
    Year Purchased
    2005
    Posts
    391

    Re: Adding the rear view map light & thermometer display

    Definitely an option, I remember specifically leaving it out on the one that we tried to order and mine doesn't have it either.

  4. #4
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display

    Does the light come on with the interior lights? In other words could I use the factory harness to control a non-temp. mirror/map light?
    Also, I'm assuming there is another harness that has to go from top of dash to mirror?
    Last edited by 1 Long TJ; 10-21-2012 at 10:22 PM.

  5. #5
    Join Date
    Aug 2010
    City/State
    Charleston, SC
    LJ Year
    2004
    Posts
    13

    Re: Adding the rear view map light & thermometer display

    Quote Originally Posted by 1 Long TJ View Post
    Does the light come on with the interior lights? In other words could I use the factory harness to control a non-temp. mirror/map light?
    Also, I'm assuming there is another harness that has to go from top of dash to mirror?
    All of the newer model TJ/LJ's have the harness under the small dash piece inside nearest to the windshield.
    Then there is another harness that takes it from under that, up the pass side header (under the plastic) and to just above where the mirror mounts.
    I may have a few spare harnesses..
    Ricky

  6. #6
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display

    If you have an extra, let me know how much.

  7. #7
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display

    I see the temp. sensor on the left. I also see a unused harness plug on the bottom right inside the grill. Is this the plug for the mirror temp. sensor?

  8. #8
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display

    I'm still curious about this setup. Can anyone confirm where the mirror temp. sensor is suppose to be? Does it use the harness I found inside the grill? Are the two sensors the same? Where does the temp. sensor harness tie into the the mirror harness, or is it all in one? Can I make one from scratch with any mirror & sensor combo and splice it into the window/dash harness for power?

  9. #9
    Join Date
    Sep 2013
    City/State
    Warrenville, SC
    LJ Year
    2005
    Year Purchased
    2010
    Posts
    1

    Re: Adding the rear view map light & thermometer display

    Quote Originally Posted by Ricky View Post
    All of the newer model TJ/LJ's have the harness under the small dash piece inside nearest to the windshield.
    Then there is another harness that takes it from under that, up the pass side header (under the plastic) and to just above where the mirror mounts.
    I may have a few spare harnesses..
    Ricky
    My 05 LJ doesn't have harness under the dash :-( I bought the mirror and other harness based on hearing a couple of years ago that all 05 & 06 TJ/LJ s had it. I still haven't figured how to wire in into the Jeep.

  10. #10
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display

    Probably won't work. You should sell those items to me.

  11. #11
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display

    I decided I didn't have the time to do a GM junk yard version. Instead, I pulled the trigger on a complete factory setup on Ebay. Mirror, harness, & temp.sensor. Plug & play. With the price of gas, I might have actually come out ahead.
    If anyone needs them, I've got an extra temp.sensor plug w/pigtail and an extra dash harness plug w/pigtail.

    Here's a link for a junkyard version.
    http://www.jeepforum.com/forum/f9/co...o-pics-952705/
    Last edited by 1 Long TJ; 03-24-2014 at 04:07 PM.

  12. #12
    Join Date
    Aug 2013
    City/State
    Bowmanville, ON
    LJ Year
    2005
    Year Purchased
    2013
    Posts
    11

    Re: Adding the rear view map light & thermometer display

    link for the auction?

  13. #13
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display

    It was on Ebay and I bought it. Auction over. ???

  14. #14
    Join Date
    Aug 2013
    City/State
    Bowmanville, ON
    LJ Year
    2005
    Year Purchased
    2013
    Posts
    11

    Re: Adding the rear view map light & thermometer display

    just curious of the seller. sometimes they have more than one.

  15. #15
    Join Date
    Aug 2012
    City/State
    Highland, IL
    LJ Year
    2006
    Year Purchased
    2012
    Posts
    190

    Re: Adding the rear view map light & thermometer display


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