Several times on this newsgroup people have asked about the power
consumption of TruTrak's electronic artificial horizon (ADI), but
until now I haven't seen a definitive answer. (Apologies if I missed
it. I did do a search on the newsgroup before posting this.) I emailed
TruTrak and got the following answer:

The current draw of the ADI is around 180 milliamps. It is nearly the same for both sizes.
Please let me know if you have any further questions. Thanks!

(I had asked if there was any difference between the 2-1/4" and the
3-1/8" models.) Not bad!

Martin
WT