Here's another source for the Hella light covers. Nice fit.
SnappyLights
541.444.2512
snappy_lights@q.com
jor
Should not affect us with built-ins, but I had Hellas bumper-mounted on the Airstream. My tech suggested I use the Hella clear rock guards that could be left on when using the lights. WRONG! The heat of the lamps bounced off the guards and cracked both lenses! I got a full refund and new lenses, but declined new rock guards.