In the last few days, I've been trying to find a large (80mm) tachometer for my '93 240. Well, a large tachometer has been offered for sale to me -- admittedly, it's not the dull or matte black that I'd prefer, but it is a tach that would fit.

My question, however, is whether this tach is really a 240's tach. The reason for my doubts is that the back side of the tachometer doesn't seem like those that have been described in what I've read on this forum.
In previous posts on this board, there is often a reference to two connectors at the bottom -- two examples:
1) "...there is a white wire with red stripes. This connects to either of the two spade terminals on the bottom of the tach...."
2) "...look for a red/white striped wire loose in there. Wasn't connected before. Now it will go to the double terminal on the new tach...."

This tach, however, has only one space terminal at the bottom. So it makes me wonder....

Please advise....

A picture of the back of the tach can be seen at
http://www.brickboard.com/GALLERY/volvopic.htm?id=6616

(I never seem to be able to make pictures appear in the message, here. Sorry for the inconvenience.)