For a 100 watt PEP HF radio or like VHF/UHF radio, the correct solution
is a 3 wire system. Positive - connected and fused at the battery and
radio ends, Negative - connected and fused at the battery and radio
ends, AND a 3rd wire connected to the firewall/frame {not battery
negative} of the vehicle and connected to the ground terminal on the
radio. Usually there is a rubber boot or grommet in the firewall just
to the left or right where the steering column passes through the
firewall. It is easy to push the needed wiring through this grommet.
Thus installation complete and no holes drilled, and one has a proper
and safe electrical source for the radio.
73
Bob, K4TAX
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