Where is the vtec solenoid on a 1995 Honda civic?

Find the battery, follow the wires to the starter to the left of the engine. The solenoid is right there with the starter, just below the surface. At least that's where mine is.

The above would be the STARTER SOLENOID switch. NOT the same.

The VTEC solenoid is on the head, just behind the distributor, small round cylinder about the size of your thumb, with a small bump on top. It is attached to the back side of the head, passenger side of the car.

Picture on Chiltons #30202 manual, p.3-24, 2-3, 3-7