Yaesu FT-1000MP Operating Manual page 106

Installing Internal Accessories
Installation
Use the fused DC cable to connect the trans-
ceiver to the DC power source. If the cable is not
long enough, it may be extended with #12 AWG
or larger stranded, insulated copper wire. How-
ever, this is not recommended, as the resulting
voltage drop may restrict transmitter power out-
put. In any installation, the DC cable should be cut
as short as possible to avoid voltage drop while
still keeping the fuses in line. The supplied fuses
are 20-A, fast-blow type, and should only be re-
placed with the same type.
Mobile Installation
Before connecting the cable, measure the DC
voltage at the battery terminals while revving
the engine. If the voltage exceeds 15 volts,
have the vehicle's voltage regulator adjusted
before proceeding.
J Determine just where the transceiver will be
located, then route the DC cable to the battery
and cut off any excess.
O With the transceiver end of the cable uncon-
nected, connect the DC cable directly to the
battery terminals: RED lead to positive, and
BLACK to negative.
(J Make sure the transceiver POWER switch is
OFF, and then connect the other end of the
cable to the transceiver.
When transmitting using an external DC
source, voltage drop in the DC cable or connec-
tions, or poor regulation of the external supply,
may cause the display to dim. This can cause
distortion of your signal, so you should reduce
the RF PWR setting until the lamps no longer
dim.
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page 104
aes Jead length as short as possible !