A Quick Note About Testarossa Tail Light Bulb Holders | FerrariChat
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A Quick Note About Testarossa Tail Light Bulb Holders

Discussion in 'Boxers/TR/M' started by Chindit, Sep 1, 2025.

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  1. Chindit

    Chindit Formula Junior
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    Oct 18, 2008
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    Nick P.
    #1 Chindit, Sep 1, 2025
    Hello Gents. I've been doing lots of work to my 89 Testarossa lately but wanted to share this with you real quick. Most owners know that the locking tangs on the taillight bulb holders get brittle with age and break off. Some of you may know that a simple 3D-printed part can offer an effective repair. My good friend recently downloaded the required STL file...

    https://www.stlfinder.com/model/snap-in-ring-for-ferrari-testarossa-rear-bulb-holder-sNsc72Tz/172205

    ... and printed me a dozen of these rings. I installed one today and am happy to say that my problem has been solved. Here are some pics. I glued the ring in with 6-min epoxy. Cheers!

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    flash32, Tifoso1, 71veedub and 2 others like this.
  2. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #2 Rifledriver, Sep 4, 2025
    Very good idea and fix. Much better that the really awful replacement sockets that were around.
    Are you, or he willing to sell them?
     
  3. Veedub00

    Veedub00 F1 Veteran
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    #3 Veedub00, Sep 4, 2025
    I'd probably buy a handful.
     
  4. lagunacc

    lagunacc F1 Rookie
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    #4 lagunacc, Sep 4, 2025
    Download the file and have them printed.

    https://craftcloud3d.com/en/upload

    Online platforms - Xometry, Protolabs Network (Hubs), Dassault Systèmes Make, or services like FATHOM and Sculpteo by uploading your 3D CAD file to their websites for an instant quote.
     
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  5. 71veedub

    71veedub Formula Junior

    May 31, 2006
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    #5 71veedub, Sep 4, 2025
    Are these the same on the 512TR?
     
  6. lagunacc

    lagunacc F1 Rookie
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    #6 lagunacc, Sep 4, 2025
    same
     
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  7. Chindit

    Chindit Formula Junior
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    Nick P.
    #7 Chindit, Sep 4, 2025
    All, thank you for replying. I'm arranging to have another batch of these made-up. I'll be happy to mail a few to any of you that need them, free of charge. Just PM me with your request. Continental U.S. only, please. It may be a few days before I am restocked. I'm always happy to help fellow FChatters!
     
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  8. Chindit

    Chindit Formula Junior
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    #8 Chindit, Sep 5, 2025
    Dinner is served! Metaphorically speaking, of course. @Rifledriver your first batch is on the way and the 2nd will follow soon after. For the others, just PM me with your preferred mailing address and desired quantity. Please take only what you need. I'm not selling these...they are free. I'm not the one who designed them and each one only costs pennies to make. Shipping is cheap.



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  9. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #9 Rifledriver, Sep 5, 2025
     
  10. Chindit

    Chindit Formula Junior
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    #10 Chindit, Sep 5, 2025
    Ok, no problem. It is much appreciated. Shipping for the two packages is about $6 total. And maybe $2 for materials. My return address will be on the packages and my email is inside. Snail mail, Pay-Pal, Zelle, Venmo are all equally good. I would appreciate your feedback on the parts. We can probably make improvements to the design, if warranted. Thanks, Brian.
     
  11. versamil

    versamil Formula 3
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    #11 versamil, Sep 7, 2025
    WOW- what an incredibly kind thing for you to do. Some times we need to see things like this to make us not think that all of humanity has gone over the edge.
    I have three Testrossa's but certainly won't request these unless I need one. Save them for people that need them- THANK YOU for doing this.

    I have a pretty complete machine shop, and a 3D printer certainly seems like a fun thing to add to my mix. Technology is amazing. A fellow machine shop owner just bought a printer that does TITANIUM- wow!
     
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  12. eziotestarossa

    eziotestarossa Karting

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    #12 eziotestarossa, Sep 15, 2025

    Wow! Amazing! I definitely need to order. all mine are broken !
     
  13. Chindit

    Chindit Formula Junior
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    #13 Chindit, Sep 16, 2025
    Greetings, Ezio. Send me a PM with your preferred mailing address and quantity of parts that you need. I'll get them in the mail as soon as I can. Cheers!
     
  14. Chindit

    Chindit Formula Junior
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    #14 Chindit, Oct 4, 2025
    @ago car nut, @Rifledriver, @Warlock, @flash32... Have any of you tried these pieces yet? Did they work for you? My repair has held up great so far. Please let me know if you have any feedback or if you have suggestions to improve the design. Thank you.
     
  15. Warlock

    Warlock Karting

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    Sunny
    #15 Warlock, Oct 7, 2025
    not yet, thanks for the reminder. I put away the envelope safely somewhere and as they say, "out of sight, out of mind"...
     
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  16. EDoug

    EDoug Formula Junior

    Apr 19, 2005
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    Southern Florida
    #16 EDoug, Oct 12, 2025 at 11:42 AM
    Nick, your goodwill here is fantastic! Because you asked for feedback/suggestions, here is mine. Your design looks great. Over 30 years ago, I discovered a loose bulb holder on my '86. I replaced it and have never observed a loose holder since. The pics below show the culprit. In your installation pics above you appear to have ground out the damaged area so that the "locking tangs" fit into that void. I was envisioning using a Dremel tool to carve out a tight notch for the locking tangs, but there is nothing there to grind. I would probably fill in and shape the damaged area with JB Weld and then notch same with a Dremel tool. I will certainly order some repair rings from you should the need arise. Thank you, EDoug


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  17. Chindit

    Chindit Formula Junior
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    #17 Chindit, Oct 13, 2025 at 7:50 AM
    Hi EDoug! Thank you for the kind words and thanks for the suggestion. I used a Dremel with one of those little "grinding ball" bits, and tried to square-off the damaged area as well as I could. I also used a sharp Exacto knife to help make the recess uniform and square. Here's a pic to illustrate what I have tried to achieve.

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    I think that is adequate, as long as the recess is deep enough to let the 3-D printed part to sit flush. Once the part is epoxied into place is seems pretty strong. But the 3-D part is plastic, too, and it can be broken if mishandled. I try to be really careful around these light bulb holders...I don't want to keep doing the same repair over and over! Yessir, just let me know if you need any of the parts and I'll send them right to you. Cheers!
     

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