Ammeter waving when ignition is on.

Mr fish i don't think there is anything wrong.... just drive and it will go away
if you have a battery that is huge capcity in comparison to orginal specification sitting on the edge of charged and not charged enough this wiggling ammeter thing hangs about for longer....

it looks crap but will go away drive drive drive or charge it with a charger and try again.

if you daily drive you will never see this
if you drive it 6 times a year to the show or track you will see it when the battery has been sitting a while. it goes away.

switch on headlamps and fan... alternator is ON then no matter how charged the battery is, and the wiggle stops. well it does on mine that gets driven infrequently and suffers a wobble on the ammeter about once a year.

it does it for the first 10 miles it doesn't do it after the following 90 to the track and it doesn't do it on the way back... but it will do it again next spring.....