[Mgs] Pos radio / neg car

[Tom Gunderson]

I have owned a pos ground MGA for years with a neg ground radio. Isolated from
the mounting under the dash. The radio has a main power and an aux power to
keep station memory and time. The radio will only work when both power cables
are connected to the same power source. Should I run a  extra cable for power
for the aux? Any ideas?

Tom Gunderson , 1957 MGA 1500 rst.

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