if it dosent have a connector there then your gonna have to make up your own loom to do it (lots of trouble for a little needle moving up and down personally) so have a look for a sei sporting and raid it for bits
because its a 1.1 it should have the signal wire from the gearbox then it would be a case of wiring a plug on the other end and then putting the rev counter in the dash and plugging it in
I think I'm find the cable near the left door, in a connector. But the wire ends in that connector. Tomorrow I will try it I hope that is the magical wire.
I find 2 wires which comes from the gearbox. I think these are goes to the ECU (you can see it in the picture in my 2nd reply). The rev signal comes from the ECU in a Red-black wire. So I'm not sure that I'm find the right wire. If somebody have a picture about that, it will be good.