Giving up on my Ram IBC/ Update
So after owning a 2015 Ram 2500, my current 2018 3500, two enclosed trailers, a 32ft TT and now a 42ft 5er TH I am convinced the IBC on a Ram just isn't going to cut it, at least to my standards. I...
Forum Discussion
Lynnmor wrote:Parallel tapped into the connector/plug on the ITBC (located behind the lower dash--below right of the steering column) and measured the braking output voltage with my VM. Been a few years so I can't remember the color code for the OEM ITBC wire with the braking voltage. Most aftermarket units use the blue wire.otrfun wrote:How, and where were you measuring the voltage at highway speeds?
Our '16 Ram Cummins SRW came with the OEM ITBC from the factory. With it set to max (10), it will only produce approx. 8 volts of braking voltage (at all speeds). For trailers that only needed 8 volts or less to brake safely, then all was good. If the trailer needed 8 - 12 volts then we were out of luck.
In any case, the wire with the braking voltage should be easy to find. Just identify the wire that varies the voltage at the same time you adjust the brake controller (with the brakes applied, of course). Don't confuse it with the brake light wire which always reads a constant 12 volts when the brakes are applied.
