3M double sided tape is the best for them, you can trim the width down to suit the strip, if they ever blow or you take them off later you can remove it easily without damaging the chrome, glue could affect it, give the LEDs and the area you are sticking them to a wipe with an alcohol swab, the medical ones from the chemist are the same that you get with a lot of self adheasive stuff, it will hold well if parts are clean before you stick them on. Let us know how they look, pics if you can. These are the ones I go from Supercheap, they came with adheasive tape on them, the other pic is the Philips DRLs I mounted under the bumper. I have an over-ride switch to stop mine from turning off when the park lights if I want them to stay on, normally though they turn off with park.