Heater Fan Switch

[nrpolo]

I am trying to get the interior sorted on my 1970 GMC stepside and have a question regarding the heater switch. My truck had a three position switch mounted with two unoriginal screws in the hole to the right of the controls, I believe it should have a cigarette lighter there. From my searches here I can not figure out where the switch was originally mounted. Does anyone know or have a picture of a dash with the correct setup. Thanks and sorry for the stock photos as I have everything apart and in boxes.