I had a similar problem with my new rig. Found a yellow video cable unplugged from the stereo that went to the tv.
Re-plugged and all OK.
You do have to change the tv input to AV also!
2011 351RLTS Eagle, Mor/Ryde suspension & pin box
06 F350 Lariat PSD, SRW, LB, CC, EGR delete kit, 16K DrawTite hitch, Timbrens, TST TPMS
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