i'm currently doing an engine swap in my forester that requires me to put in a gf8 wiring loom.....

my forester thermo fans have 2 wires to power each of them

my gf8 loom has 3 wires to power each thermo

i've mucked around with both gc8 and forester sets of thermo's off the car and discovered that the both sets of thermos can be powered up by just connecting the black wire to the earth and the blue wire to the positive, that leaves me with the green wire off the loom just doing nothing

now my question is.... what is the green wire for, maybe an over-ride power-on for when the a/c is switched on?

so how do i go about wiring this 3 pin plug up to my forester thermo's to keep them fully functioning?

i've thought about using the gc8 fans but will require quite a bit of mucking around to fit my forester radiator, i'm not too keen on buying a gc8 radiator as then i will have no way of bolting my overflow tank to it and i'm slowly running out of cash here having to buy this that & the other

any help muchly appreciated