I've check power at the fuse box, and theres no positive on the fan speed control but there is continuity, on the bottom of the blower motor there is a two cable harness with a black wire and a blue and white. Black is ground but im not getting anything from the blue white. Any ideas? Thanks

 

there is a resistor for the blower motor, it tends to burn out. I couldn't find any pictures quickly, but search on HT for resistor.

79330-SH3-003 RESISTOR, BLOWER 1 1991 CIVIC 31.10 24.26

 

turn the ign. on and set the fan to its first setting (1). take a test light and connect to ground. Go to the two wires at the blower, if working properly, one should be ground and the other should be hot.if both wires are hot your resistor is bad. hope this helps!!!

 

ah ok, ill test again tonight to be sure but i believe the hot wire on the motor the blue white one is Not getting juice. I pulled the heater resistor and it looks ok the springs are good but most of the coating is gone. Ill test the motor with a 12v battery and work backwords, hopefully i can get this fixed tonight its getting cold

 

Ok so i tested agian power at the fuse and has a good contact. Checked resistor- good, no power at resistor harness so no power at blower. Once i jump power into blue white wire everything works fine fan speed controls as well. Any idea's or does anyone have a diagram of how the electrical for the heater blower is ran. Thanks

 

Update turns out was testing the wrong fuse, spot the heater fuse is on the side clip on the fuse box. Im not getting power that fuse harness.

 

Did you ever figure it the power problem I cannot for the life of me figure out how to get power to my blower or resistor I've changed both and my climate control and the relay