How to Cut a Grommet Hole for Installation of the Oval Trailer Tail Lights # BU70CB

Question:

how big of a hole do i need to cut for the optronics 6 1/2inch oval back up light model BU70CB

asked by: Roy

Helpful Expert Reply:

The easiest way to cut the oval hole for the Rubber Grommet, # a70gb, to install the Optronics Light part # BU70CB, in my opinion, would be to use a Light Mounting Bracket for 6-1/2 inch Oval Trailer Lights, BK70BB, as a template and then use a hole saw the correct size to cut a hole on each end of the mounting location. Then, use a angle grinder with cut off wheel or a reciprocating saw with metal cutting blade to cut the straight top and bottom sides of the hole.

The correct width for the grommet is 2-5/8 inches, but I have found that a 2-1/2 inch hole saw usually works well and you could enlarge the hole slightly with a file or small rotary tool with grinding stone. When drilling the holes make sure that the outside edge of each hole is 6-3/4 inches apart.

expert reply by: Jameson C