REAL TR Dome Lights! | FerrariChat

REAL TR Dome Lights!

Discussion in 'Boxers/TR/M' started by Spasso, Dec 30, 2008.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    #1 Spasso, Dec 30, 2008
    Last edited by a moderator: Sep 7, 2017
    In my quest to get every single light functioning on my TR I found the hilarious excuse for dome lighting in the overhead console. This is comprised of a rectangular recess with seven 3 watt tubular bulbs in it. These bulbs, when lit, create a slightly lighter rectangular image in the dark plastic center piece of the overhead console, giving virtually ZERO light to the interior of the car, a whopping 21 watts of light forced through a layer of white opaque plastic and a layer of nearly opaque dark green plastic. What were these guys thinking?

    I decided to use the available design to maximize the light without overloading the existing electrical circuit.

    Step 1,
    Let the light out!
    The dark green plastic insert in the console would just be too dark unless a halogen headlight bulb is placed behind it. Too much heat and current draw so that was out.
    I decided to duplicate the design element of the circular map light by cutting two more holes in the dark plastic spaced out equally over the rectangular recess aft of the map light. The result is two 2.5" holes with the white opaque plastic underneath.

    It was scary as hell cutting the holes because I REALLY didn't want to butcher this plastic piece.
    I used a brand new hole cutter to ensure the cleanest cut.
    I covered both sides of the plastic with super heavy duty (black) duct tape.
    I clamped the plastic down on a piece of 2 x 8 padded with news paper.
    I drilled a couple of 1/8" pilot holes first.

    To cut the holes it is important to run the drill as SLOWLY as you can to minimize heat build-up. If the plastic gets hot and starts to melt it can seize and possibly crack.
    Cut from the side of the plastic that will be EXPOSED TO THE CABIN. You will find that the entry cut will be cleaner than the exit cut and easier to clean up.

    I spent an hour wet sanding the holes BY HAND to maintain a consistent shape and bevel to each hole. I started with 320 then to 400, 600, 1500 and 2000 grit. I then polished the entire piece with Meguier's Scratch-X.

    On to the next step.
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
     
  2. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    #2 Spasso, Dec 30, 2008
    Last edited by a moderator: Sep 7, 2017
    Step 2.
    Make More Light!
    I wanted to go with brighter bulbs and the best I could come up with locally were four 10 watt tubular bulbs that were basically the same length as the stock 3 watt bulbs but larger in diameter. There was plenty of room in the recess and the heat output virtually nill.

    When I laid out the two 2.5" holes I centered them over the 2nd and 3rd bulbs from either end of the light recess. I installed the 10 watt bulbs in those positions so they would line up with the two circular holes.

    I also lined the center of the lighting recess with self adhesive aluminum repair tape from Ace hardware for reflectivity and heat control..

    By installing the four 10 watt bulbs I raised circuit load only 28 watts over stock and increased light output by 400% after cutting the two holes.

    The first picture shows the seven 3 watt bulbs.
    The second picture shows the four 10 watt bulbs installed. I bent the tabs into an 'S' shape to better seat against the end of the larger diameter bulbs.
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
    Image Unavailable, Please Login
     
  3. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    If a person wanted to play with the intensity or color all you would have to do is replace the white opaque plastic with one of a different color (red or a lighter green?) or pull the 10 watt bulbs out and go back to the 3 watt bulbs..
     
  4. curtisc63

    curtisc63 Formula 3
    Owner

    Dec 13, 2005
    2,290
    Maryland
    Full Name:
    Curtis Campbell
    Nice job. Looks very good!

    CC
     
  5. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    Thanks.
    I checked the "slot" lights in the lower console yesterday. They lit up kind of. I tore everything apart and they were indeed working but I didn't want to attempt any mods to increase output because of the design limitations. I'll just use the map light if I have to.
     
  6. Norm512TR

    Norm512TR Formula Junior

    Nov 10, 2001
    895
    Colorado Springs, Colorado
    Full Name:
    Norm
    Great work! It looks really nice and a lot more light. This is probably better than my solution- I only drive during the day
     
  7. sparta49

    sparta49 F1 Veteran
    Owner

    Mar 3, 2001
    7,804
    LA
    Full Name:
    Frank
    Very nice upgrade, and a great writeup
     
  8. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    Thank you.

    The driving force behind this was when I was caught driving at night shortly after I bought the car and couldn't find what I was looking for. I really thought the lights were burned out.
    I may try to do an upgrade to the slot lights in the lower console next winter but for now at least I can see what I'm doing in there now.
     
  9. carguy

    carguy F1 Rookie

    Oct 30, 2002
    3,425
    Alabama (was Mich.)
    Full Name:
    Jeff
    Those lower center console lights are the strangest things! For those that have never seen how they work, they operate on the prism effect. The actual light bulbs are located down the sides of the console, a few inches from the top, and their light is transmitted up and across the console controls through a piece of glass that is cut at certain angles to direct the light as needed. Kind of a primative version of using an optic fiber or something like that. It's a need idea in theory, but the reality is it don't work very well.
     
  10. theq

    theq Karting

    May 7, 2008
    207
    continuim
    Full Name:
    Joel
    With mechanical apptitude like that you could work on airplanes. LoL
     
  11. vipermann123

    vipermann123 Formula 3

    Jun 13, 2005
    1,786
    Irvine, Ca
    Full Name:
    Uzy Malik
    Great Job!!!!!

    Hey..maybe you should start selling the assembly. I am sure other TR owners might be interested.

    Thanks,
    UZY
     
  12. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    You mean, don't work at all!
    Bigger sockets and lights would have to go in to be of any use. The bulbs in there now are probably 2 watt bulbs. Maybe some strip LED's in the slots would work better.............................uh oh, I think I just made more work for myself.:rolleyes:
     
  13. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    Careful,
    I know where you work!
     
  14. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo
    Once I figured out how to R & R of the console it only took 30 minutes or so to do that.
    The dark plastic cover appears to be available through Ricambi (P/N #61526700) if you don't want to drill your own. All it takes is an hour or so to layout the new holes, set-up and drill then sand and polish.
    If I was retired I would offer to do the mods for a price. As it is I hardly have the time to take care of my own crap:p:p
     
  15. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
    14,656
    The fabulous PNW
    Full Name:
    Han Solo

Share This Page