Al, my RC Exel opto switch with BEC says type K1, Ver 2.0, for A-123. It has only 2 wires (in and out) plus a LED bulb wire. There is another "input" with no wire plugged into it.... would take a very small plug. I'm sure Tom at VV says this was supposed to cut down the voltage without any mods or anything but this was last fall. I will give him a call today. Thank you for your info on the mods as well.

The Tech Aero IBEC looks terriffic. So doe the Flightmaster that Tower sells for $10 more I think.