LED bulbs not sticking

Due to the differences in light fixtures, a one size fits all solution may not be possible.
Here's what I did.

My fixtures had a white reflector/heat shield that sort of bowed out from the under lying plastic. This made it impossible fotr the LED panels to lay flat and for the tape to have any chance of holding.

I removed the reflector/shield as it really isn't needed with LEDS.
At 12 volts they run much cooler than the incandescent bulbs they are replacing.
I was then able to stick the panels on the flat plastic surface that was underneath.
The tape isn't real 3M. I wasn't confident in it, so I put a dab of silicone (because I had a open tube handy) on each corner.

Been on quite a few trips an miles of rough roads. Not one has fallen.

I did have one out of about 20 that had a failed solder joint. It was easy to resolder it. Even it I had replaced it, at the low cost, I wouldn't have minded.

One thing to keep in mind. Although the panels run cooler than regular bulbs at 12 volts, at higher voltages they can get hot.

So there is potential for over heating when on shore/generator power.

To prevent this I installed voltage regulators on the two circuits that I have LEDS on. Cheap enough and not too hard to do.

I tie-wrapped mine to the reflectors.

I had some that had double sides tabs with a red backing, that stuff didn't stick well at all. So I turned on all the lights to allow the tape to heat up and make it easier to remove. Then I used actual 3M double sided tape and have not had any of the panels come off and it's been over a year.

Silicone sealer (RTV). Put a dab on the back of the panel (right on the 3-M tape is fine), and stick in the appropriate position in the receptacle. Take a folded paper towel or something, and put between the cover lens and the panel to hold the panel in position (OBVIOUSLY don't turn the light on while the paper/whatever is between the panel and the lens), and snap the cover lens in place. After a few hours, the RTV will be cured, and the LED will stick in place. Remove the paper. I've done 10 LED's in my RV this way, and it works EVERY TIME.

Hi

Velcro