Cummins 47re/48re fmvb (full manual valve body) wiring kit – gray's 48re towing valve body 2003-2007 Valve 48re body automatic install
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47/48RE Automatic Valve Body Install - YouTube
Cummins 47RE/48RE FMVB (Full Manual Valve Body) Wiring Kit – Gray's
48RE Towing Valve Body 2003-2007 | Revmax Converters