Invisibrake | Troubleshooting Help Needed

[ejm4]

I am using the invisibrake on my 2013 F-150. I have used the setup all last year with no issues.

I brought the coach out of storage today and hooked up. I applied the brake in the coach and the light came on indicating the Invisibrake was working.

The second and rest of the brake applications resulted in no light coming on in the dash. Arrived home and checked all the connections - all o.k.

I pulled the emergency disconnect and the unit activated and applied the brake as if the truck broke away from the coach.

Any ideas? Possible bad light cord from the coach to the toad?

[view2a.thril]

Is the Invisibrake (IB) actually activating when you press the RV brake pedal and the RV dash monitor light is just not working? That monitor light is wired to the toad’s cold side brake light switch and should light when IB pulls the toad brake pedal. If that wire disconnects it wouldn’t keep IB from working, you just won’t know that it is.