On Tue, Sep 29, 2020 at 12:31 AM, pete wrote:
do away with the fuse in the negative line not needed
It kind of is.
In an automotive situation if the battery negative to chassis connection fails it's possible a *lot* of current will try and find its way home via the radio. It's not a likely situation but is possible. Having said that I only use one fuse on mobile rigs and no fuses at all on my bush radio but simply a 1m lead to a battery.
