Radio Shack 85 owner manual Illus please add a dwg that illustrates step

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12-1977.fm Page 7 Tuesday, July 13, 1999 10:07 AM

2.Securely connect the supplied dark blue/white wire’s spade connector end to the amplifier’s REM (remote power) terminal.

3.Connect the dark blue/white wire’s other end to your autosound system’s switched power lead using a twist-on terminal connector (such as Cat. No. 64-3057, not supplied).

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Note: If your autosound system does not have a remote power output lead, connect this wire to a point in your vehicle’s fuse box that provides 12-volt battery power when the ignition is set to ON or ACC.This connection turns on the amplifier when you turn your ignition switch to on (or to ACC) and turns off the amplifier when you turn off the ignition.

4.Connect the black wire’s eyelet/spade terminal end to the amplifier’s two GND terminals.

5.Securely connect the black wire’s eyelet-terminal to a nearby metal ground, such as a bolt attached to a part of the vehicle’s chassis.

Note: Be sure the bolt is not insulated from the chassis by a plastic part or other insulating material.

6.Connect the red wire’s eyelet/spade terminal end to the amplifier’s two +12V terminals.

7.Remove the nut from the positive (+) cable’s terminal bolt, mount the red wire’s 50A fused eyelet terminal on the bolt, then replace and tighten the bolt.

Caution: Due to the amplifier’s high current requirement, you MUST con-

nect the red wire’s fused end directly to the vehicle’s positive (+) battery cable terminal bolt or damage to your vehicle’s wiring could result.

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Note: Do not reconnect your vehicle battery’s negative (–) cable yet.

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Contents 85 × 4 High Power 4-Channel Trunk Mount Amplifier Automatic Thermal Protection FeaturesMute Turn On Circuit eliminates Contents Preparation Before YOU Begin the InstallationChoosing a Mounting Location Connecting Ground and PRIMARY/SWITCHED Power Illus please add a dwg that illustrates step Low Level Input Connections Connecting to Your Autosound SystemFm Page 9 Tuesday, July 13, 1999 1007 AM Fm Page 10 Tuesday, July 13, 1999 1007 AM High-Level Input Connections Floating Ground Connection Common Fm Page 13 Tuesday, July 13, 1999 1007 AM Preparing the Speaker Wires Connecting the SpeakersConnecting Four Speakers Connecting Two Speakers Unbridged Connection Connecting Two Speakers Bridged Connection Fm Page 18 Tuesday, July 13, 1999 1007 AM Connecting Two Unbridged Speakers and One Bridged Subwoofer Testing the Connections Mounting the Amplifier Fm Page 22 Tuesday, July 13, 1999 1007 AM Operation Setting the Level ControlTurning on the Amplifier Over Freq On/Off Switch Using the Frequency CrossoverOver Freq Control Maintenance Replacing the Tube-Type Fuse Replacing the FusesReplacing a Blade-Type Fuse Specifications Radio Shack