This is my first motorhome. I have been rv'ing for 8 years. I bought a class c Jayco Greyhawk and towing a Jeep Wrangler. I got a brake buddy with the setup and I don't think the dealer had it set ...
My Classic starts as all red. With each of the five test button activations they disappear one at a time. All five should become green if it is working properly. The troubleshooting instructions are clear about problem identification.