Well I am glad my original post has born fruit. I shall implement this but have one concern with regard to the ground signal. For RS232 to work correctly a common ground is required I.e. The ground on the PAW should be the same as the ground on the iBox. Technically they will be the same but my PAW is nowhere near the iBox. All my Avionics has a common ground but the PAW is in the rear and plugged into a USB (non noisy Charge4) which is grounded on the battery ground bus. Any suggestions apart from extra wiring to ensure a good signal would be appreciated.
Carlos, PS where abouts are you in Spain, hoping to be flying around in second half of Feb with two other PAW equipped a/c.