Light bar for emergency vehicles

A light bar for emergency vehicles, such as police cars, comprising a relatively thin flat elongate base having opposite sides and opposite ends and being adapted for mounting thereon a plurality of electrical and mechanical components such as lamps, a siren and the circuitry therefor, at least one bulkhead on the base extending transversely with respect thereto from one side of the base to the other, said bulkhead comprising generally parallel spaced-apart walls having a sealing member therebetween, said sealing member having a sealing fit with the base and with said bulkhead walls, a first series of holes in one wall and a second series of holes in the other wall, each hole in the first series being generally aligned with a corresponding hole in the second series to permit passage of a wire through the bulkhead via said aligned holes, a series of holes in each wall being provided to accommodate any number wires up to a maximum corresponding to the number of holes in a series, said sealing member being sufficiently soft to permit penetration of a wire through the member and sufficiently resilient to seal around the wire after penetration whereby a wire may be passed through the bulkhead by inserting the wire through a hole in said first series and then pushing the wire through the sealing member and through the corresponding aligned hole in the second series, said sealing member being adapted to seal around the wire to prevent the passage of moisture and the like through the bulkhead.

A method of making a light bar for emergency vehicles, said light bar comprising a relatively thin flat elongate base adapted for mounting thereon a plurality of electrical and mechanical components such as lamps, a siren and the circuitry therefor, said method comprising the steps of:

• providing an array of holes in the base extending lengthwise of the base, said holes being of such number and so arrayed as to accommodate any one of a multiplicity of component configurations;
• applying sealing means to the base over the holes to seal the holes;
• and
• mounting selected components on the base by threading a plurality of fasteners through said sealing means into specific holes in said array of holes for fastening said selected components to the base in a predetermined configuration, the other holes in the array remaining sealed by said sealing means.