On the Freightliner chassis, there are two brake light switches, located on the bottom of the air brake tredle. You must access them from under the coach.
You should have two black boxes that are included with the basic chassis containing relays and fuses. These two boxes are strapped to the chassis for delivery by Freightliner, and the final placement is made by the coach builder. On my Holiday Rambler, they are in the bin below the driver's seat. Your's should be somewhere near the front of the coach.
Find these to boxes, and look at the labels inside the box covers to find fuses and relays that may affect the brake light circuit.
You can also call the Freightliner help desk (free service). Have your vin number handy as they will ask for that. 1 800 FTL HELP)
Fred
