Well I figured it out the same day I posted. I got my multi-meter and went looking for the light dim cable. I taped into the light for the airbag and parking light and it works great. The problem is that the fusion dimming cable is in the smaller plug that has the SAT and AUX inputs. I could not find it there with the multi-meter so I left it alone and I looked elsewhere and so far so good. Use the light cable from the radio and tap into the dimming cable and it is done.
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