Headlight question, answer please.

[DragRag]

On my 88' crew cab I just picked all four headlights come on when I turn them on. Is it low beam on top, and high on the bottom? My bottoms have moisture in them so it is hard to tell. I am going to replace the bottoms with new ones because of this. My main problem though is the turn signal switch doesn't cllick and switch from high to low when I pull it, it is stuck on high. Is there an easy fix for that? How hard is it to replace the switch in the column. I think I'd like to replace the how turn signal lever to, the wipers only work on low, no slower or faster, so i think the whole lever is jacked. Is this easy to do? I am new to Chevy, so assume I know nothing about this procedure, thanks. it is a Tilt column no cruise if that matter. Also, just to get by if repacing this whole lever and switch is a bear, can I just put a second set of low beams below the top headlights? let me know, thanks.