need some help w mini maxx

I don't want to use the power source to the fuse box for power. Is there a power source under the dash I can use in that clump of wires coming into the cab by the rubber seal where I went through to the fuse box? I want to use one of those and don't know which one I can use. So I need you guys help to get a 12v key on and off power source under the dash, so I can soldier power wire onto one of these. Thanks

Here's a thread from another site that answer your question.

http://www.powerstroke.org/forum/showthread.php?t=310898


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