Yep i have used them. here is a little something that mite be of use to ya.

On/Off/Automatic Driving lights & Installing Fog Lights .

Some of the better Lights I have used are the Per-Lux 200 series lights.

1965 GMC 3500 Rescue in the Stovebolt Gallery

My Facebook Links:
Jolly Goodfellow.
the 6066 GMC Guy.
Jolly's Truck & Car Show Page.
Owner of ~ 1965 GMC 3500 Custom Rescue Squad {Black Built Bodies}.