Having trouble with my bc70 radio and the corded power fuse. The fuse
3amps keeps blowing out. What size fuse is needed? THANKS !

Too many unknown variables here for anyone to give an answer. Perhaps
when you unplug your scanner, you let the cord hang loose and it shorts
out against some metal part between the seats or elsewhere in the car
shoring the fuse, in which case, always unplug from the lighter first.

Many times, when a fuse keeps blowing on me, I put the next higher value
fuse in and never have another problem, but I would not recommend this
for you, since none of use know exactly what you are doing and why it is
blowing.