[xj40] Glue for rear window stoplight?

I’m getting frustrated (89 XJ40)… I tried several
different adhesives that didn’t last more than a couple of
days (one only hours), then on advice of my independent
repair shop, who said the glues available to the public in
stores won’t do the job, I went to a glass shop and had them
re-glue it at a cost of $52 (dunno what glue they used).
Less than 3 months later the stoplight is lying on the shelf
again.
I’m in sunny CA, so the rays and heat are killers, but it
lasted 18 years on the factory glue, whatever that was.

Anybody had any better luck? If so, what did you use?
I haven’t yet tried 2-part epoxy or rear-view mirror glue
(doesn’t say it works on plastic, and the stoplight isn’t
glued to bare glass).–
84 XJS, 89 XJ40
Santa Barbara, CA, United States
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In reply to a message from WayneC sent Fri 6 Feb 2009:

I live in Vegas and can understand your fustration with the
glues letting go in the heat.

What I have found works great is the gasket maker in a tube
called ‘‘The Right Stuff’’ Comes in a 5oz can. Stuff is
extremely tacky going on and I have found this to be the
only thing that holds up in the hot hot sun. It’s also the
best gasket maker I have ever used, I swear by it. I have
actually used this on body cladding parts on the outside of
cars to, works awesome.

Just make sure for the rear brake light to scrape and clean
the mounts on the light and the glass with a razor etc. Then
you will need to use a book or something under the light to
keep it in position and use tape or something to keep it
pressed onto the glass. Allow it to dry overnight and then
remove it. Once its dry it will take allot of pulling force
to remove but will never damage anything.

I have yet to have it fail. The problem with the adhesives
is they become hard and brittle and the sun can even
sometimes make them soften and then it falls off.

Try it out, you will be surprised :)–
billabongo
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In reply to a message from billabongo sent Fri 6 Feb 2009:

Thanks for the reply. I had an off-line reply saying that JB
weld 2-part epoxy also works well, but I’m not sure about it
working out here with the UV rays and heat that we have.
Sure wish I knew what the factory used.–
84 XJS, 89 XJ40
Santa Barbara, CA, United States
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In reply to a message from WayneC sent Fri 6 Feb 2009:

Hi

After a few attempts with varoius glues I tried some mastic
that is used with a gun for sealing around baths and the
like. Its very tacky and it has stuck for a couple of years
so far.

Cheap too if you have some spare lying around in the garage
or shed…

Regards–
The original message included these comments:

Less than 3 months later the stoplight is lying on the shelf
again.
I’m in sunny CA, so the rays and heat are killers, but it
lasted 18 years on the factory glue, whatever that was.
Anybody had any better luck? If so, what did you use?


John Pattenden - 1991 Daimler 4.0L (RHD) 300,000klm
Woodend, Victoria, Australia
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In reply to a message from WayneC sent Fri 6 Feb 2009:

If I remember correctly, I used clear weatherstrip adhesive. That
way it won’t be affected by the heat, but I can also get it off
later if I need to.–
Brett 89 XJ40
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In reply to a message from wylde8 sent Sat 7 Feb 2009:

Thanks, not a bad idea at all, I may give weatherstrip
adhesive a try… I can always use a 2-part epoxy later
if it doesn’t hold up.–
The original message included these comments:

If I remember correctly, I used clear weatherstrip adhesive. That
way it won’t be affected by the heat, but I can also get it off
later if I need to.


84 XJS, 89 XJ40
Santa Barbara, CA, United States
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It is still stuck on the back window ten years later.

Great to hear! Sounds like it worked well.