which colour speedo drive gear?

I've been trying to get my speedo working on my mk1 caddy.

It has a 1.6 petrol driver engine with a 4sp manual box. The code on the gear box underneath is 5B27078…

I bought both drive gears as they were cheap and easier than messing about going back and forth to the garage…

So does anyone know which colour my car needs?

The garage supplied both a green and a cream coloured one….

You might be able to save me some time on trial and error testing… i've searched but no luck so far…

green
5B uses a 68/16 diff:
020 GEAR RATIOS

Thanks for that… I had fitted the other one but have now swapped it.. Didn't matter as I'd not had time to go out and test it..
Finally getting it something like ready for day to day use.. Just need to put a stereo in it now…

Thanks again..