First power up

[TimJBennett]

Can you power up the EMS without the harness connected at all?
What should I watch out for on first power up of the EFIS, AP74 and EMS?

 

[dynonsupport]

The EMS-D10 and EMS-D120 cannot have batteries, so the only way to get them to turn on is to power them from the back.

I wouldn't say there is anything to watch out for in powering them up.