Originally Posted by Adam1219
Do the brake lights come on when the engine brake is being used?
Yes, they normally do but can be reprogrammed to only activate with the brake.
From the installation manual:
The wiring installation utilizes the brake lights of the RV to activate the Demco system in combination with “G-Force.” If
the coach is equipped with an exhaust brake that illuminates the brake lights of the coach, extra attention must be given
to the activation light. On steep grades all G-Force sensors will sense inertia faster and more quickly due to the angle of
the grade. You may need to adjust it slightly closer to the “less sensitive” (upper) position. This has very little effect in the
activation of the Demco Stay-IN-Play Duo on level terrain because of the difference in G-Force with two wheels braking
(as in an exhaust brake) and with four (or more) wheels braking when the service brakes are applied. The G-Force Sensor
will likely not need to be re-adjusted.
Just a suggestion, you can use the trailer brake controller wire that's bundled under the dash to run your line. The controller wiring should be in a bundle of three to four wires near the steering column. There will be a blue wire in there for the controller that goes to a pin on the trailer connection at the rear. I used mine to run a LED signal wire to the dash.