If you are attaching lights to your window trim use tube light clips or nail on plastic clips.
How to put up icicle lights with gutter guards.
Simply sliding the tab underneath the bottom shingle and stringing the wire through the hanger portion will enable lights to be strung across your roofline easily.
If your gutter helmet is installed underneath your shingles then most traditional shingle clips will work as intended.
The best way to add icicle lights to your gutter.
These clips will grip shingles or gutters and have a lower hook that holds a light strand or extension cord.