Allen G. Wiesner wrote: >I assume that the two center contacts of the DPDT switch are jumpered together?
No, the schematic doesn't show that does it? The center contacts are where the power comes from, which is the main battery and electrical system in one case (the "right side"), and the backup battery in the other case (the "left side"). Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net