[carboncrew]

I basically have a 1991 suburban with a 208 transfer case with speedo cable.

I need VSS instead of the mech. speedo cable

From reading and research it sounds like I have 3 options:

signal generator - plugs into transfer case speedo cable (do I need Electronic Ratio Adapter??)
reluctor ring/speed sensor - plugs into tail housing of tranny
reluctor ring/speed sensor - plug into rear diff.

Can someone explain which would be the best option? I'm still confused here.

Thanks for any helps guys/gals