In article ,
3T39 wrote:
Add yet one more wire for an 'always-live' wire to keep station memory
(and clock-if present) intact.

See what I mean :^)

Possibly a dimmer feed from the car instrument lighting. Feed to aerial
amp if it has a rear window type. Or it might have an external power amp.
Some also use the display for non-radio things - but this should be
obvious.

--
*My designated driver drove me to drink

Dave Plowman London SW
To e-mail, change noise into sound.