I did consider zipties but I didn't have any small enough at the time that i would've used. Bird dog raises a good point about them breaking...it gets hot as hell here. Plus the wires are super thin that you can't really see them once there in there. I'd have to point them out to people who didn't know.
I have another idea... . Get ready, here comes the smoke!
If you don't mind waiting an extra day to do the install, get a squeeze tube of clear silicone. Place a dot of silicone and lay the tube on top of it. Hold it in place with scotch tape. Keep doing that along the light tube. Leave it to dry over night and then remove the tape. Viola! Tube stays in its place and held from behind by silicone that won't break off for crap in any heat, moisture or anything else.
I know this works because I put a magnetic mount cb antenna on my roof and a glass mounted ham radio antenna on the glass. I ran the wires along the edge of the back glass because I hate unsightly hanging wires down the back of my rig. Looks like I fed them into a hole and you cannot see the silicone. Check it out.
If you look closely you can see the coax running along the edge of the glass. Hard to see the silicone because it's clear. Where I have it, I really should have used black silicone but what's done is done for now. You guys can use the clear better.
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