2012 Chevrolet Police Technical Manual (pdf) - GM Fleet

wIrINg DIagram – tahoE PPv aND 5w4 | 29
This provision permits customer connection of a switch to select either horn of
siren operation when the horn pad is pressed.
A 22-gauge (0.35 mm2) wire is connected to an in-line connector in the horn
circuit of the instrument panel harness under the instrument panel. The end of this
harness extension is a 5-foot (1.5 m) loop of wire coiled under the center of the
instrument panel.
wIRING DIAGRAM FOR OPTION 6J4 IN-LINE cONNEcTOR
Note: Wiring diagrams for these options are shown in the Police Package owner’s manual
supplement (shipped in glove box).
wIRING PROVISION FOR FRONT
SPEAkERS – OPTION wX7
Approximately 60 inches (1.5 m) of auxiliary speaker wiring is routed from the
front door and windshield pillar speakers and coiled under the instrument panel.
The wiring permits connection of the front speaker pairs to customer-installed
communication equipment. Vehicle radio front speaker outputs are re-routed to
the rear speakers to maintain the required open door/key-in-ignition audible
warning. A vehicle radio mute circuit is available to mute the radio audio signal
when customer radio is transmitting. See the wiring diagram for Controlled Power
and Signal Circuits
2012 Chevrolet Municipal Vehicles Technical Manual