Yaesu FTM-3100R Operating Manual

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8InstallationFTM-3100R Operating ManualPower connectionTo minimize voltage drop and avoid blowing the vehicle’s fuses, connect the suppliedDC power cable directly to the battery terminals. Do not attempt to defeat or bypass theDC cable fuse - it is there to protect you, your transceiver, and your vehicle’s electricalsystem.Warning!Never apply AC power to the power cable of the FTM-3100R, nor DC voltagegreater than 15.8 Volts. When replacing the fuse, only use a 25-A fuse. Failureto observe these safety precautions will void the Limited Warranty on thisproduct.r Before connecting the transceiver, check the voltage at the battery terminals while rev-ving the engine. If the voltage exceeds 15 Volts, adjust the vehicle’s voltage regulatorbefore proceeding with installation.r Connect the RED power cable lead to the POSITIVE (+) battery terminal, and theBLACK power cable lead to the NEGATIVE (–) terminal. If you need to extend thepower cable, use #12 AWG or larger insulated, stranded copper wire. Solder the spliceconnections carefully, and wrap the connections thoroughly with insulating electricaltape.r Before connecting the cable to the transceiver, verify the voltage and polarity at thevoltage at the transceiver end of the DC cable, using a DC voltmeter. Now connect thetransceiver to the DC cable.Rear panelPower cable(DC 13.8 V)BlackDC power supplycable (supplied)DC 12 V batteryFuse holderRedWarning!• Do not use a DC power supply cable other than the one that is supplied orspecified.• Do not place anything on the DC power supply cable or step on it.• Do not use the DC power supply cable with the fuse holder cut off.• Do not reverse the polarity (positive and negative) when connecting thebattery.