Hello guys

I'm having a problem with my 03 Fiesta 1.4 16v. The airbag light is on and is flashing once, then twice, which means "Low battery voltage".

I've been reading about similar problems online and everyone says to check the wiring under the seat. The thing is, I have no wiring under the drivers seat, and there is only one under the passenger seat (no yellow ones for the airbag).

Is this normal on my car?

Any help would be much appreciated.

Thanks