Dean beat me to it.
One for high beams, the other us to BYPASS the management system.
Under the dash is a device with a Relay that turns off the fuel to the engine if low oil or high temperature, it has a beeper to make noise, you get 30 seconds or so before it shuts off the motor, you hold down the button to bypass shutdown so you can get off the road.
We unplugged ours because previous owner bad moved it and left it loose, thought it might short out something, a few weeks later the engine would crank and not fire, normal is running in less than 2 seconds of cranking, but forgot about unpluging...
After panic stopped and reading some troubleshooting the light when on...plugged back in and all well.
Suggest you locate your controller, should be black aluminum box about 3x5 or so with sonalert and Relay attached.
Gillig can provide documentation on it if you do not have it.
It was factory "provided" by Gillig, CC determined where it went, ours us 1989 and under dash at Center behind the musical horn, not sure on newer model, Dean may know.
Tony & Lori
1989 Country Coach Savannah SE