This custom dash from Happy Trails Products provides a perfect location for indicators, toggles, and outlets. The holes are .250" in diameter and are intended as pilot holes for accessories or toggle switches (standard is .720"). Easy installation.
Color: Black powder coat.
Dimensions: 10-3/8" L and 1-5/8" W
If you click on the item it expands the window and there are more pictures.
It uses the windscreen center bolt.