I don't think that you should do that.
Than you are installing a mechanical switch again that you first deleted for specific reasons.
If you want a hidden switch and the same functionality as the powerbox, you should consider the [link=http://shop.rc-electronic.com/e-vendo.php?shop=k_emcotec_e&SessionId=&a=article&
Pr odNr=A11050&t=6&c=541&p=541]
Emcotec DPSI Micro[/link]. That system has almost the same functionality and price as the powerbox but includes a magnetic switch actuator so you can hide the switch inside your fuselage.
Teus