I have a DEK-180 which I purchased a few years back. I am just completing my electrical work and I note that pin 2 on the EFIS DB25 connector (yellow- Keep Alive Power) is to be connected when there is no internal battery or the EFIS is not connected to a GPS. The specs for my unit don't mention whether it has an internal battery or not and I haven't powered the unit up yet. Is there some way I can determine if my unit is fitted with an internal battery?
Thx.
Thx.