Rob thanks for help..I wired the blower motor directly to battery to see if it would work and it did. I have power at the fuse box. I took resister off and looked at it but do not understand what its purpose is. Has 3 prongs onit and looks like 2 springs connected to it. I unhooked the plug in wire to the blower motor and the plug has no power. I clipped a wire to the prong at blower motor and touched battery term. and it worked. The plug that plugs into resister has no power. Any suggestions? Thanks. Also I have no power at fuse box for the dash lights. Do I need to trace this wire or any other ideas. Thanks

Glad i could help. on the dash lights make sure that you have turned the light switch knob all the way to the right, this is the dimmer, if you still have no power at the fuse, then it sounds like the reostate of the headlight switch is burnt out and you will need a new switch. To get the switch out you have to reach up behind to the switch. on the switch is a small button, depress the button and the pull the lights on keep pulling untill the knob comes out. Now you can undo the nut and pull the switch down. On the front of the switch is a spring is it burnt?, also there is a small plate wich rotates with the knob is it contacting the spring? the power flows through the spring to the plate from the plate to the fuse and then to the dash lights.
on the heater resistor the springs are the resistors, Do have power at any of the wires going to this resistor block? Try each fan speed setting, If you have power in and nothing out then it sounds like the resistor is the culpert. I bought a new unit from my GM dealer, (he used the part # on the unit) cost was $10.00 Canadian. Does your car have AC?

Befor you pull the switch out and do all that trouble I assume that the tail lights work okay. If the tail light fuse blows then you will have no power at the dash light fuse.