LED light not coming on in MH

[dsisemore1]

I have an invisi brake system. I have had it for about three years. The issue I have is the light inside does not come on when the brake is applied. The audio alert that is supposed to come on after about 20 seconds does not come on either. However the actual braking system itself works fine. The brakes come on in the tow vehicle and release after about twenty seconds like they are supposed to.
I have checked the wiring harness to make sure there are no loose wires.
I have replaced the bullet connector between the tow vehicle and the coach. (At one time I could wiggle the bullet connector and it seemed to work intermittently)
Any suggestions would be appreciated.

[mfinnerty]

You say you've checked the harness for loose wires. Have you checked the wire for the brake feedback with a multi tester to be sure it is activated when the brake pedal in the toad is depressed? The problem could be between the toad's brake light switch and the harness to the MH. It could also be a bad brake light switch, in which case you don't have brake lights on the toad. Had that happen last year in Michigan.