There are a few relays in the car. The common one is under the drivers seat. There's also a relay on the passenger side shock tower right under the maf sensor and then I believe there is another one above the computer on the harness but I do not know if the shock tower and one above the computer control the FP or not.
If you slide your seat all the way forward you should be able to see it. It's right near the plug for the power lumbar support.
90 LX hatchback
(sold but not forgotten)
89 LX Notchback
No motor/trans (for now)