Speedometer input into back of gauge cluster?

[boosted_E30]

The speedometer + odometer in my 91 325I hasn't worked since I bought the vehicle.

So today I went ahead and pulled out the gauge cluster, and I can tell that it has been taken out before and possible the speed sensor input into the speedometer/odometer wasnt hooked up correctly?

So I have it taken apart, and wonder which plug it plugs into? It would fit into one of the plugs on the right


The wire I am thinking is misplugged is a blue/yellow wire inside the dash.

[DaveSmed]

If you take the green thing apart (or just take my word on it) you will find those three plugs are actually common to each other, so plugging the wire in any of them nets the same result.

They are speedometer outputs however, and that wire in question goes to your cruise control.