Yan if you have managed to purchase this equipment, then you must believe you have the ability to connect it, I doubt any of the other engineers that write on this site will have the time to write in detail how to do what you want.
All im gonna say is the Menvier SD1+ requires a - trigger as well as 12volts, so where is the obvious place to find this. Or you can do what i do, and programme output 3 switched -ve programme option Bell.
Have fun
Tel 07842 480037
Nick
February 2010