OK taken a look at it now and I must say I am impressed, furthermore just looking at the loom kind of explains how it works
Luckily I already have the switches and I also have the blocks that plug into the seats themselves.
The loom starting at the switch end splits off for the two switches see below...


Abit further down it leads to what looks to me like an earth wire and two live wires 1 of which has the relay and the other has a fuse (im yet to work out where this goes).

It then splits off at the otherend to go to each seat as said earlyer im lucky as I have the blocks from when I got the seats.

Now all I have to do is work out which wire connects to what

Hope this helps mate.