1997 Kenworth t800 flasher problem need help

I’m wondering if it’s the brake lights instead of turn signals. Maybe a wire rubbed and activating the brake relay intermittent.

 

I need to apologize for that remark about dementia. I am caring for a parent with that condition. There is nothing funny about that.

 

If you are in a area that uses that mag chloride as a deicer, that will drive electrical systems bad.

 

Kinda what I was thinking too. I'd try and pull the brake light relay and see if it stops. 23 year old truck with the fuse panel behind the clutch pedal good chance green disease crept in.