No electricity after turning breaker back on! Need sage advice!
Thanks for the response, Wirenut. Some of the jargon is over my head though so I'll do my best to paint a picture.
You ask: "When you unhooked the 2 wires from your old switch, did you just hook up those 2 back to the dimmer?"
Yes. On the old switch, the negative current was connected by its wire to the main wire with that plastic "screw cap". The positive current was connected in the same way, however, the wire going through the wall cavity was not cut but was folded over before being screwed in together. And that folded wire continued on to be connected to the second switch that controls the outside light.
Connecting new dimmer, I "stabbed" the negative into the back of the switch but had to loop the positive around the screw and tighten it (again, because that line is ultimately connected to the second switch on the main panel). The ground wire was connected to the appropriate area, per the instructions.
So, I'll check the connections again. I wonder if the problem is with the way I've connected the positive wire to the new dimmer switch, maybe broke the connection? Doesn't seem logical but then I've got the "newbie" label attached to my profile.