I ordered a new blower motor and the new one only has two wires. Black and white. The old one has three black white and red?

SOURCE: Wiring compressor

The two terminal cap is only for the new fan motor. Connect the compressor wire back where you found it, on the 3 terminal cap. It's the terminal marked, "herm". The "common" terminal on the 3 terminal cap must still be connected to one side of the 220 power at the contactor. One side of the 220 goes to the common on the compressor. The other side of the 220 goes to the run winding on the compressor AND the common terminal on the 3 terminal capacitor.

SOURCE: Help - I am trying to install a honeywell RLV4300A

You will have to have schematics from the old wiring diagram. Then you will have to confirm its consistency with actual old wiring before you can be sure that the wires run to the proper places on the old heater and a/c system. This sounds like a gas furnace and is simpler than a heatpump. Once you know what distinguishes the wires with the same color, you should label them and then you may call them a different color if they were wired with wrong wire colors. You may be in luck if you go to the furnace control box an look at the terminals.. They are usually labeled with a R for Red and W for white and Bl for Blue and B or Black. If you have other colors on these then it sounds that it was wired with wire spare wire by someone who knew what they were doing but neglected to leave a path for someone else follow.
You may be able to use a continuity tester of circuit tester to id these wires that are in question...
ie, once indintified, you can match with the requirements of the new stat.

SOURCE: replacing blower motor in furnace w/Fasco brand #D727

Some one missed the wiring diagram. I believe its like this:
L1 = Line 1 = (Hot all are same thing)
Black Hi
Blue Med
Red LO
Now usually the black is for AC and connects to a normally Open (NO) contact on the blower relay.
The heater speed (either red or blue) go the the normally Closed (NC) on the blower relay and on one side of this wire or contact on the relay it goes to the heating blower thermostat on the furnace.
The remaining wire (blue or red) you tape off.
L1 also feeds the Run Capacitor on 1 side and the Brown wire feeds the opposite side

The white wire is Neutral and goes to the neutral on the main line.

If this helps you please rate me accordingly and good luck.

SOURCE: wiring a 220v single phase motor and capacitor

Black and white are usually power. an ohmmeter will confirm. Brown are for capacitors. There is almost always a diagram on the motor someplace. Eric

Joseph Mueller

• 346 Answers
• Posted on Feb 21, 2011

SOURCE: BLACK, RED, AND WHITE WIRE COMES FROM HOOD BLACK

This picture might help. Do you have a light too?

if not just take it out of the loop.
best wishes