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I've searched all over this forum and a couple of others without any luck -- hope someone here can help me.

I've a 2002 Sierra extended cab with the long overhead console in the roof. It currently has the slot to hold a single portable garage door opener, but I want to replace that with the GM 3 button homelink module. I picked up a used homelink module and have removed my console, however the homelink module has 3 wires (orange, black, and brown), while my old console only has the orange and black going into it. Can someone tell me what the brown wire is and if there is an easy way to connect this up?

Thanks in advance for any help.

Mike
 
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