I did this 2 yrs ago with a kit from Autozone. Not sure exactly which one but it was around $35-50. Worth every penny. Maybe one of the best mods I have made since I can't fit my 90 in the garage and its damn cold in the mornings here.
I remember the wiring diagram being a little off ( I had 3 wires and the diagram used 4 and the colors were off) but I figured it out and I am no electrician. I think I put 2 wires to one after figuring out which wire was which.