Just finished my second AC3 upgrade with the wonderful kit from http://www.theheathkitshop.com/drakeac4r.html
This one was significantly easier than the first one I did. The first AC3 I did had some ambiguous wire colors, so there was some confusion. This AC3 seemed more aligned to the AC4 upgrade instructions. I did note that in the instructions there was mentioned a "white / orange" wire, and in this AC3 it was simply orange. My only other two cents worth are: 1) As I ended up doing with the first one, I have a filament transformer hookup that gives me about a 15:1 reduction from line voltage, makes that initial "snap crackle pop" voltage test a little less stressful 2) Even if 1) tests out OK, that doesn't mean at full voltage you might not encounter some arcing at full voltage if something was in too close proximity to something else. On the first conversion I did, I had an alligator clip from the DVM to the HV, and the clip placement was enough to get some exciting arcing. Also, take care to make sure nothing's sticking out that might meet the bottom plate. Again, a most satisfying project, thanks Mike ! Chuck, K1OM, Alachua, FL
