2013 Ram 1500 and other models, Rf Hub , Bypassing the highside driver Board on no Crank or run Conditions
By robfowler1966
I hope this info helps others with the pre 2018 RAMS. 2013 TO BE SPECIFIC . Symptom : key in Ignition bell rings , door locks work but no radio or Dash and no Crank, in my case the high side driver that drives the pink BCM wire. GOAL: to avoid having to find and reprogram a new rf hub and keys . i built a bypass circuit that senses the purple wire from ignition switch 5.64vdc and turns on an opto coupler transistor circuit thru a 2n2222 transistor and trips a 12v relay. which... Read more