no HVAC lights, no headlight buzzer

[SirDigby]

hello. so i removed my aftermarket tachometer, and am getting ready to install my new tachometer. i had the illumination light wired directly into the lower fuse box on old tach. when i was running wires for new illumination, i found a wire tap installed on dimmer adjustment rheostat. i though it might be nice to dim the new tach, so i connected wiring to tap in. the other side was not connected yet, i was just running wiring. after that, i lost HVAC lighting, and speedometer does not dim when turning on headlights. buzzer is not functioning for "lights on warning." i disconnected the installed dimmer switch wire. i have checked all under dash fuses and under hood fuses. i can not seem to find where the issue is. headlights, parking lights, DRL's, tail lights all function normal. i've done a search for this issue, but there is not a clear answer on any posts. i've seen mention of the dimmer switch, and panel 1 and panel 2 fuses, but i can not seem to locate these fuses.
do you have a solution for me?
thanks!