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Hi, I'm Mike and I'll be assisting you. Please stand by while I review your question.
I need to know if you left the mechanical switch or a companion dimmer in the other switch box. Also the count and color of the wires in the other box and on that switch.
I left the regular old switch in the other switch box. I forgot to mention that I am using a large LED light.
In the other switch, there is only a 3/14 cable. White is in the common.
Can you also explain how this is possible. I have done a limited amount of wiring. Where is the power coming from? Thanks.
From your statements the power originates at the light fixture. You need to reconfigure the connections on the mechanical switch. The wire connected to the blue screw on the dimmer connects to a gold screw on the switch. The wire on the dimmer brass screw connects with the wire on the switch black screw. Remove that wire, connect with a wire nut and jumper wire to the switch black screw.
When you say " you need to reconfigure the connections on the mechanical switch."
I believe you are saying to that I need to change the wiring at the old regular switch.
There is no blue screw on the dimmer. There are no screws on the dimmer just wires. It has 4 wires coming from it a red, red/white, black and green.
Not giving me a model number, I gave you instructions for another dimmer, disregard. Connect as follows