All ActivityMost RecentMost LikesSolutionsRe: 1999 F53 chassis, no brake lights or hazard flashersScott, the wiring from the plug isn't connected to anything. WHen I looked at it the wire connectors and screws to the terminals were corroded so I simply put a new set of terminals. They cannot affect the coach light operation when not connected. I do not know if the brake lights/hazards were working, I tool the coach out of storage last month but frankly did not check the lights as they were working when put away (as far as I know) FoMoCo says there is only one flasher relay on a 99 F53. All fuses seems to be good, checked twice. No separate set of fuses for trailer plug. Multi Function switch is the turn signal stalk, everything (brake lights, flashers, turn signals) runs through there. This way, the flashers override the turn signals and brake lights when operated. DarwinRe: 1999 F53 chassis, no brake lights or hazard flashersSorry, what I did to replace the plug is irrelevant. I came to notice I had no brake lights when I was making sure I wired the plug correctly. The Motor Home has no brake lights or hazard flashers. All fuses seem to be good, flasher works for the turn signals and I have since learned that there is a single flasher for the turn signals and hazards. Darwin1999 F53 chassis, no brake lights or hazard flashersHello all, just finished a trip in my 99 F53 Motor Home. Had some trailer wiring to update (new plug) and in the process of testing the lights on the tow I discovered I have no brake lights. Turn signals and running lights are all fine. No 4 way flashers either. The multi function seems to be working, when I try to engage the flashers it DOES override the turn signals as it is supposed to. My understanding is that the turn signals and the hazard signals use the same flasher relay, correct? I believe my pedal mounted brake switch is working as it kicks the CC off with just a touch of my foot. I've read lots of posts but most deal with the loss of brake lights AND turn signals and is usually a multi function switch problem. I read a post on another forum that someone had gotten info from Ford that there is a flasher relay as part of a fuse but I can't locate anything in my manual. DOes anyone know if there IS a separate flasher relay somewhere for the hazards only? Thanks to all who can respond. Darwin