B737 Anti Ice Indications.

[B737NG_Pilot]

There are 8 indications on a typical Boeing flight deck when you select engine anti-ice to ON? What are they?

[JeroenC]

4 are obvious. N1 thrust change could be other 2. Dunno about the other 2. FMC somewhere?

Nice article by Mr Boone!

[Jwscud]

Depends if you count the switches being in the 'ON' position as 2 more indications too?

Is there any noticeable change in duct pressure? Will have to have a look in the aircraft.