compas where put it?

[efil 01 74]

hello

i've got a  falcon vertical compas. i got some issue to find a place with not much deviation, seem avid is big magnetic bird, top of panel is more than 20 degree ; under the canopy is 20  degree other side, i found a place on panel where  deviation is near ZERO but it is not far (about 10 centimeters) from ignition switch and engine gauges, as i did not wired yet, i wonder if this will produce a deviation when engine is on...

Edited 23 Oct 2018 by efil 01

[Allen Sutphin 705]

Several are installed above the panel at the Y tube. Use some rubber washers and brass screws to attach it. Swing it with everything on that you would normally use in flight. Most use the compass on their GPS anyhow. I have the same compass and have used it for years. Even look at it on occasion.