Wiring up slimline fans advice?
 

I have two slim line fans that i finally have the time to fit to my alloy radiator but wondering whether i should just wire the one in as i dont run my air con any more.

But would seem a bit of a waste :P So was thinking would it be worth wiring the other fan to come in at the second speed? From what i remember the plug is a 3 wire for alternative speeds. So could i not have them share the ground wire and the wire either positive wire from the plug to each fan?

Any care to share their fitment? :)

Harrow? anywun der?