Heat up my headlight in the oven for how long, how hot?

what temprature to separate lense from headlight bucket

    Heat up my headlight in the oven for how long, how hot?

    Retrofit Resource says 275 degrees for 7 minutes. I’ve read about others doing it at 250, 300 degrees. I’m sure there are various temperatures that work for different people’s different headlights, but mind sharing what your experiences are? If you don’t mind, can you keep this format? It’ll help others read through what’s relevant for them as a list much more quickly. I’m expecting lots of responses. Thanks in advance! The newbies will love you for it.

    1. Did you preheat?

    2. How long did you put the headlights in the oven for?

    3. At what temperature?

    4. Did you have to do it again a second time? Third?

    5. I’m assuming you placed it on a piece of wood so the oven’s metal doesn’t burn your headlight. Any other tips? Stuff you wish you knew before you did it?

    6. Horror stories you care to share?

    7. What did you use to reseal the lens? I’ve read about various stuff.

    Please share your experience with the rest of the rookies. Thanks!

    Last edited by zoomie; January 5th, 2011, 02:44 AM.

    Researching halogen projector retrofit for a Yamaha Vino 125 motor scooter.

    If you ride a motorcycle/scooter, mention it in your sig using this:

    I ride


    Preheat to 250 and go in 5 min increments. Too little is no problem. Too long and you’ll end up with a melted lense and you’ll have to buy a new light.

    Yes put it on something. Just go slow when you’re opening it and don’t use any jerking motions. It’s very easy to crack the lense/housing/clips especially when they’re warm. To reseal most everyone uses some brand of butyl tape. Just type it in ebay or amazon and you’ll find it.

    Heat up my headlight in the oven for how long, how hot?

    05 300C – 15 Taurus SHO



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    1. Did you preheat? Yes

    2. How long did you put the headlights in the oven for? 15 mins first time, 5 second

    3. At what temperature? 230

    4. Did you have to do it again a second time? Third? Twice worked for me

    5. I’m assuming you placed it on a piece of wood so the oven’s metal doesn’t burn your headlight. Any other tips? Stuff you wish you knew before you did it? Don’t use wood that’s been painted

    6. Horror stories you care to share?

    7. What did you use to reseal the lens? 3m window-weld ribbon sealer


    Heat up my headlight in the oven for how long, how hot?


    I preheated to 250, then shut off and inserted headlight on cardboard for 10 min.


    It really depends on your headlight, but I think in general use lower heat + longer time is safer than higher heat + short time.

    I did mine (8th gen civic) at 230F for 13min. Preheated.


    All great contributions. This is helpful for the newbs. Thanks for taking the time to write something. And thanks jdover52 for keeping with the format.

    Researching halogen projector retrofit for a Yamaha Vino 125 motor scooter.

    If you ride a motorcycle/scooter, mention it in your sig using this:

    I ride


    I still will always prefer a heat gun over an oven but thats just me. Been pulling apart headlights that way for the last 15years with no issues. Watched a friend “bake” his lights til it got a nice haze on the lens and still never melted the glue enough to separate the lens lol


    1. Did you preheat? Yes

    2. How long did you put the headlights in the oven for? 10 min.

    3. At what temperature? 200 degrees

    4. Did you have to do it again a second time? Third? One headlight came apart on the first try. The other one took an additional 5 min.

    5. I’m assuming you placed it on a piece of wood so the oven’s metal doesn’t burn your headlight. Any other tips? Stuff you wish you knew before you did it? I just placed them on a cookie tray. 200 degrees isn’t all that hot.

    6. Horror stories you care to share? First time I baked them I set the oven to 300 degrees and it melted the inner turn signal lens on both headlights. I didn’t notice it on the first headlight, and I melted the second one as well. I had to buy another set of headlights (used/craigslist) to disassemble so I could get the $1 plastic lens out of them.

    7. What did you use to reseal the lens? First time I used clean silicone and didn’t have any problems with condensation. There was a lot of OEM sealant still along the seams, so I believe the seal remained intact. I followed the same procedure the 2nd time and both lights had leaks. I had to buy butyl sealant from amazon to get a good seal.


    Thanks much for your guys’ responses – especially the warning from Mike S. That’s the reason I posted this thread. I’m sure I’m not alone when I say I’m pretty freaked out about putting a headlight into an oven. Seems like enough of you have done it successfully and a personal friend of mine has as well, but it’s just scary to me. I’ll definitely do it when it comes down to it.

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    My personality fits the heat gun method, but 1) I don’t have a heat gun 2) Would you have guessed my headlight only costs about $54 before tax and shipping (scooter)? I’m buying another one made by Autopal for $28 to hack up. Confirming projector fitment at the moment.

    This thread has really helped! Thanks again to the contributors and I hope you readers are finding this helpful as well.

    Researching halogen projector retrofit for a Yamaha Vino 125 motor scooter.

    If you ride a motorcycle/scooter, mention it in your sig using this:

    I ride


    Using heat gun actually require more skill than using the oven. The problem is usually heat gun doesn’t give you the fine control (unless you got some really expansive and fancy one) of temperature as the oven. The temperature from heat gun will be affected by how far or near your gun to the headlight, and you will need to heat a spot long enough to soften the sealant, but at the same time be careful not to heat it for too long and melt the housing. By using the oven, you are pretty much “set it and forget it”…. as long as you know what temperature you should use and for how long.


    I’ve been working on my first retrofit and trying to open a set of headlights for the ’97 Chrysler Town and Country. I tried different temperatures and durations, and it looks like 250-270F for about 10 minutes gets the glue soft. I was able to pry half of it apart before the glue hardened, so I put it back in the oven for another few minutes to finish the job.

    One problem I noticed, and maybe it’s unique to the Chrysler housing desing, is that when prying the lens out, the lip of the housing is very thin and it gets pushed out of the way and stays in that position. Is there a way to bring it back down so that it will make an effective seal, maybe heat it up again and push it into position? I hope this makes sense, if not, I can post a photo.


    Photos always help. Please post one and we might be able to figure it out for you.

    Researching halogen projector retrofit for a Yamaha Vino 125 motor scooter.

    If you ride a motorcycle/scooter, mention it in your sig using this:

    I ride


    Originally posted by zoomie View Post

    Photos always help. Please post one and we might be able to figure it out for you.

    OK, will do when I get home tonight.

    Basically, the lens cross section is a male “tang”, and the housing is a female “clevis”, into which the lens tang fits (and where the glue sits). But when opening up the headlight, the clevis of the housing gets pried apart, and then stays that way when cooled off. So I need some way to close the clevis back to the original shape so it seats nicely against the lens tang. Makes sense? Heat up my headlight in the oven for how long, how hot?

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