Check the tail light bulbs. These bulbs do double duty. Thet are both the tail light & the brake light. Tail light part might be burnt out.
Those tail lights could be the brake lights you are seeing and that would be a faulty brake light switch or the brake light switch is out of adjustment.
Brake Lights Don't Turn OffUsually this issue is caused by an improperly adjusted brake light switch. Sometimes it could be a defective switch, but this is rare.
Check bulbs Fuse Stop light switch
Brake light switch failure, bad ground wire at rear of vehicle or fuze blown.
that sounds like i ground in the bake by the lights or if it has a trailer plug i would start their
replace the break light bulbs?
the plug behind the battery might be unplugged or that same plug is disconnected from the fuse box
Try the tractor with a different trailer, the pig tail is most likely not connecting properly.
Alternator has/is going bad.
Brake bulbs. You might need to replace them. It just happened to mine and it was tricky to do it. To take the brake lights you need to pull them from the sides, there is a small piece that would come out easily and then you can just take the screws out.
you have bad contact in ground cable of the brake lights You might also like to check that there has not been a bulb replacement lately that uses a single contact in a double contact socket. This would have the effect of shorting the brake and tail light inputs and thus turn on ALL lights when brakes are applied or the parking lights turned on.
brake switch ???