cdb I did some digging around in my 93 a week ago and I believe I found the relay spots. I am not positive but: there was a female end for a 5 prong relay to plug into my drivers seat. In my 93 It was towards the back center almost above the fuse box underneath the seat. The same thing was on the passenger side and that one had an old (probably original) Hella relay in it. And those were the only relays I saw when I dug around real quick in the mess of wiring under the seats. I did not mess with them because I don't have replacement relays. Hope it is some help...
1993 Range Rover Classic LWB
2005 Nismo 350GT