Europa-List: Soft start

[david park <dpark748@hotmail.co.uk>]

I have just fitted two new soft start modules to my Rotax 912ULS. Should they 
both
be activated by the start switch and start on both modules. or select only
one module to start then activate the second by going to both. I have only wired
up one module at the moment but have installed wire to be used from the second
module if it is ok to do so.?
Any experts out there?
G-LDVO 

Dave Park