They normally light up together, probably one of the ABS wheel speed sensors being an early car it won't have the more complicated rotational sensors etc of the later models, front ABS sensors I have seen fail relatively regularly and are cheap-ish
I wish there was I'm in North West France.There's a few people on here that have INPA and suchlike diagnostic equipment, may be worth letting us know where you are, might be someone just down the road that can help.