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(1) Position the radio receiver to the instrument panel. (2) Reconnect the instrument panel wire harness connectors and the antenna coaxial cable connector (3) Position the radio receiver into the mounting hole in the instrument panel. (4) Install and tighten the four screws that secure the radio receiver to the instrument panel. Tighten (5) Install the cluster bezel onto the instrument panel. (Refer to 23 - BODY/INSTRUMENT PANEL - (6) Reconnect the battery negative cable. RADIO NOISE SUPPRESSION DESCRIPTION Radio Frequency Interference (RFI) and Electro- Magnetic Interference (EMI) noise suppression is radio receivers. These internal suppression devices are only serviced as part of the radio receiver. External suppression devices that are used on this vehicle to control RFI or EMI noise include the fol- • Radio antenna base ground • Radio receiver chassis ground wire or strap • Engine-to-body ground strap(s) • Exhaust system-to-body ground strap (4.7L engines only) • Resistor-type spark plugs • Radio suppression-type secondary ignition wir- ing. For more information on the spark plugs and sec- ondary ignition components, refer to ELECTRICAL/ DIAGNOSIS AND TESTING - RADIO NOISE WARNING: ON VEHICLES EQUIPPED WITH AIR- REFER TO ELECTRICAL, RESTRAINTS BEFORE ATTEMPTING ANY STEERING WHEEL, COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE For complete circuit diagrams, refer to the appro- priate wiring information. The wiring information and retention, connector pin-out information and • Blower motor • Electric fuel pump • Engine-to-body ground strap(s) • Generator • Ignition module • Radio antenna base ground • Radio receiver chassis ground wire or strap • Wiper motor. component on the vehicle (i.e., generator, blower For service and inspection of secondary ignition components, refer to ELECTRICAL/IGNITION CON- • Distributor cap and rotor • Ignition coil • Spark plugs • Spark plug wire routing and condition. components as required. If the source of the RFI or EMI noise is identified as two-way mobile radio or telephone equipment, • Power connections should be made directly to the battery, and fused as closely to the battery as • The antenna should be mounted on the roof or toward the rear of the vehicle. Remember that mag- • The antenna cable should be fully shielded coax- ial cable, should be as short as is practical, and • The antenna and cable must be carefully matched to ensure a low Standing Wave Ratio Fleet vehicles are available with an extra-cost RFI- suppressed Powertrain Control Module (PCM). This 8A - 10 AUDIO AN RADIO (Continued) |