"Woody" <TheDuck@pond.net> wrote:
> How old is the battery? The battery can be bad not showing signs in
> starting etc allowing excessive noise in the electrical system. They have
> been known to cause those types of problems. Also make sure all the
> electrical grounds and connections are good and battery posts and
> connections are clean.

This could be the issue - I have been getting intermittent interference on
my radio recently, and wondered if there was a general problem with the
ground connection somewhere. If I want to check the ground connections are
secure, how many am I looking at? Are they all over the place.

Could someone tell me what battery voltages I should expect at the battery
posts when the engine is (a) off (b) idle?

Thanks,
Al