I took opened up the AFC housing to change fuel plates and since I did that, the heater controls, curise and 4x4 (or at least the light) dont work. Any idea as to what i may have done?

 

You accidently unplugged a vacuum line. Scan the area where you were working, you're sure to see it.

 

I'll go out and have a look during my lunch break and see if i cant find it. I was starting to suspect that.

 

I lost my heater control when the controlling vacuum line came loose from the hold-down near the firewall and fell across the top of the engine - had a nice clean burn-through, I installed a short plastic tube to rejoin the two lines.