Sandaysoft

I have just installed a new Maplins N96GY, a Fine Offset 1080 clone I believe, which is working really well with Cumulus.
In going through my bits and pieces I found the parts for my old Davis Weather Monitor 11, all appears to be OK apart from the wind sensors, both are corroded solid. The one part I cannot find is the junction box which connects the sensors to the display unit.
I thought it would be interesting to compare the two systems but cannot get the outdoor sensors to connect without the junction box. So, my question/request is does anybody have or know of a source of the schematic for the junction box? or can anyone help with what is inside the box, is it just a simple junction box? or something more sophisticated? if the former does anyone know how it is connected inside?

Thanks,

Chris