I've moved into a older US home
I'm trying to update a light switch to a dimmer.
The wires are clothed but in good condition.
There are two wires going to the top side screw and one on the bottom.
I have a leviton dimmer with 4 wires, it says to use 3 overall and a 4th if necessary.
I don't see any pigtails either. I've wired newer wiring but not this.
Any advice would be appreciated. I do have a multi meter as well but was wondering if this wire configuration is even able to take the dimmer.
I've looked and can't find any answers within here.