I understand what you're saying, I took no offence.
In the meantime I came across this
. It's an adaptor that comes with some scythe fans to be able to power 3 pin fans by the PSU and retain the RPM monitoring on the motherboard through that yellow wire leading to the mother 3 pin end. Considering I'm looking at a fan controller that only has 3 pin fan support all it requires is an added 4 pin molex to 3 pin adaptor. A bit of overkill with the wiring and adapting (considering I'm looking at installing 5 coolers this way) but it does what I'm looking for without the need of soldering.
Now all I need is to find that adaptor being sold without any fans to give me a wider choice.