Hi,
Dont have any diagram, but these photos should help you work it out (wires from seat base to wires from car)
DSCN3759 by
eric holm, on Flickr
DSCN3760 by
eric holm, on Flickr
DSCN3761 by
eric holm, on Flickr
DSCN3762 by
eric holm, on Flickr
DSCN3766 by
eric holm, on Flickr
DSCN3757 by
eric holm, on Flickr
I know I had to swap the seats from passenger to driver and vice versa to make them fit, so have to change seat belt fixings around, with some modification to runners on base, also had to move controls on drivers seat to front section, it was a few years ago, but they do fit and worked fine, just when I sat on them my eye line was too high as they are really comfy, with a think base section, I'm 5'10 so ideal for someone of 5'7 or below.
Cheers and good luck!