This is the 1995 Chevrolet Tahoe System Wiring Diagrams Heater Circuit

This is the 1995 Chevrolet Tahoe System Wiring Diagrams Heater Circuit
In this part of Wiring diagrams, you will see the parts as follow:
underhood fuse relay center, fuse block, blower switcher, blower resistor, high blower relay, blower motor.

This is very simple but still have to get enough attention for the best result. Please notice the color codes as well. And after you understand both, it is guaranteed that you will success on you wiring work. 

Here is the image. Click on it to enlarge.

This is the 1995 Chevrolet Tahoe System Wiring Diagrams Heater Circuit