I almost crashed because of the design defect in the 2015 Ram IBC. I've tried to get it fixed twice by my dealer, and they claim it works as designed. I've got one more appointment scheduled and hope they can fix the other issues I currently have with my truck but am almost certain they will refuse to admit to the defect with the IBC so I'm also working other avenues for recourse. My opinion is there will be some serious mishaps because of this.
As for the current reading you got, that is about right. If you put a scope on the circuit you will see that it uses a pulse width modulated signal, with a max duty cycle of approximately 65 percent. I've read that Chrysler claims it will give full output if you're above 35mph but I've tried it twice with a parallel cable run to the cab and hitting the brakes on a deserted road at 45mph and the output duty cycle was still only 65 percent with the IBC brakes set to heavy electric and gain on 10. My 2011 RAM was pretty much the opposite in that the brakes would apply more braking than I wanted in the snow even with the gain turned to the lowest setting.
As for why you haven't seen more complaints about this I find that interesting as well. I tend to change my settings based on the conditions I'm driving in and especially in the mountains I often like to set them fairly high in some conditions. With all three trailers I've towed with my 2015 it's blaringly obvious the max braking is seriously limited. Hooking up a scope makes it very obvious it's doing just what it feels like it's doing.
