For WOZ, maybe you could use this plugged into the service outlet.
http://www.powerswitchtail.com/
Trigger it to turn on with the power turning on for the topper with a delay relay. I use the above to turn on a power supply for added mods so that it doesn't load down any of the Pin circuits - just a minor low amp to turn on the relay to power it up.Just throwing out some ideas.