40 Watt Equalizer/Booster (120-1955) Installation Faxback Doc. # 7578 You may either connect the electrical wiring or install your Equalizer/Booster first-- whichever is most convenient for you. If, after reading the following instructions, you are unsure about performing the installation (questions like, "Is my car negative ground? Which cord is the power cable? How do I connect to the fuse box?"), we suggest you have the Booster installed by a qualified electronics technician. IMPROPER WIRING OF THE POWER BOOSTER COULD DAMAGE YOUR CAR'S ELECTRICAL SYSTEM. ELECTRICAL WIRING 1. Fasten the single black wire from the Equalizer/Booster to a convenient metal frame ground connection of your vehicle (or to the [-] battery terminal). 2. Connect the front and rear speaker wires to the speakers. 3. Connect the single red wire that terminates in a spade lug to a source of +12 volts DC. IMPORTANT WIRING NOTE Each speaker must have a separate ground wire connection. Do not use a common wire for the minus (-) side of the speakers. Do not connect the minus (-) side of the speakers to a common ground point. CAUTION: If your stereo radio or tape player requires a connector that differs from the one supplied with your Equalizer/Booster, we suggest you take your car to a qualified electronics service technician and have the unit rewired. They may find our Universal Car Stereo Connector (Cat. No. 270-017) helpful in making these connections. Improper connections can result in damage to the Equalizer/Booster, radio, tape player, or even to the wiring of your vehicle. IN-LINE FUSES If existing fuses for the radio or tape player are 2A or 3A, use a 7A fuse between the Equalizer/Booster and 12-volt power source. If the radio or tape player comes with a 4A or 5A fuse, then use a 10A fuse between the Equalizer/Booster and power source (i.e. the fuse to 12-volt power source must always be higher than the rating of the fuse for the radio or tape player). 7A fuses come supplied with the Equalizer/Booster. Change as required if your radio or tape player uses other than a 3A fuse. ELECTRICAL CONNECTIONS HIGH IMPEDANCE INPUT If the device which will be connected (tape player, radio) to your Booster has a HIGH impedance output, use the High Impedance Line input of the Booster. Two RCA jacks are provided for this connection. Use an extension cable with RCA plugs on either end if need be. Then, be sure to disconnect the LOW impedance input by separating the two square 4 pin connectors. However, be sure to plug the round 5 pin plug into the rear receptacle provided on your radio or tape player. LOW IMPEDANCE INPUT If the output of your tape player or radio is low impedance, then do not use the RCA input jacks. Instead, connect the square 4 pin plug and jack between the radio or tape player and the Booster. Be sure to insert the 5 pin plug into the proper jack on the radio or player as well. MOUNTING THE EQUALIZER/BOOSTER Choose a convenient and suitable location under the dashboard of your vehicle which will not interfere with driving. Be sure it is also away from any direct hot air from the heater of the car. Allow enough leg room for a passenger and also be certain to position the unit so that there is no interference from any other wires, cables or other parts of the car. 1. With both brackets temporarily attached to the Booster, position the unit in the chosen location and mark the dash through the holes in each bracket. 2. Drill the marked holes and secure the brackets using the screws and washers provided. 3. Attach the Equalizer/Booster to the mounted brackets using the four machine screws, flat washers and spring washers. (br/all-9/19/94)