C3100 Speaker Universal Mounting Bracket Kit

Selecting a Mounting Location: The mounting location should not only be as flat as possible but also, allow the siren to project its tone parallel to the road.
For detailed information on mounting locations for certain specific vehicles, see the following pages.
Installation: Position the bracket onto the desired mounting area and mark the centers of the 4 mounting holes using the bracket as a template.
Now in the center of each of the 4 holes you marked, drill a 1/8-inch pilot hole into the mounting surface for each of the 4 screws then enlarge the pilot holes with a 9/32-inch drill. If you can get access to the other side of the mounting area, and it is not too thick, you may want to substitute the 4 mounting screws with nuts, bolts and washers (customer supplied) of comparable strength and size.
Secure the bracket to the mounting surface with the 4 supplied hex head screws or the customer supplied fasteners of comparable strength and size.
Note: Some kits are supplied with self-tapping screws. When installing this type of screw you may need a socket and electric drill to drive the screws.
Attach the siren to the bracket using the supplied screws and washers as shown in Fig. 1. Note the center screw is a button head cap screw and lock washer.
Extend the BLUE (Positive) and WHITE (Negative) speaker wires to your siren amplifier and connect as shown in the amplifiers instructions.
Test the siren for proper operation.
Mounting The Speaker
Installation / 2002-2003 Ford Explorer:
The speaker will be mounted in front of the driver side front tire, behind the bumper. You will use two existing nuts and their bolts that are already on the vehicle. Always be sure that the siren’s wires exit the bottom of the siren after mounting for proper drainage of the siren.

pdf source: http://www.code3pse.com/public/media/inst_c3100_universal_mount_t11271_rev_0.pdf