Topic, I've tried a few products but the engine bay is just too hot it and just falls off.

Pretty dangerous if a cathode/transformer were to get stuck in the belt. >_>

 

Have you tried the 3M double-sided tape? I'm talking about the good automotive stuff that holds practically anything in place.

If that doesn't do it I'd suggest something more solid like zip-ties. You can get them very small and in many colors to make it look nice and they will be solid.

 

I used the 3M double sided molding tape. Mine have been secure for almost a year. Never had a problem. Just be sure to clean the surface with some acetone prior to application. Shouldnt be an issue...

 

Mine are also secured with little squares f 3M double sided automotive attachment tape ands no problems. Make sure both surfaces (the cathode tube and the spot where you will stick it) are totally clean and grease free.

 

x3

 

3M tape.

 

I use the zip ties that have a mounting tab on the end. Then I use small 5/16th head self tapping screws. Works great on cold cathode mounting.